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New Civil Engineer (Bridge)
Transpennine Route Upgrade | Cross Gates Railway Bridge Set For Major Reconstruction
Cross Gates in Leeds is set to undergo significant changes as the Transpennine Route Upgrade (TRU) prepares to rebuild the Station Road railway bridge. Spanning from March to November, the project aims to enhance the existing railway infrastructure to support increased frequency and speed of train services between York, Leeds, and Manchester that the TRU will provide. Station Road bridge was originally built between 1830 and 1834. It was widened in 1936 and then widened again in 1953. The primary driver behind the TRU is the electrification of the entire 112km rail line, a move designed to facilitate cleaner and quieter electric trains. Currently, the Station Road bridge is deemed too low to accommodate the overhead line equipment (OLE) required for this electrification, necessitating its complete reconstruction. Work on the bridge will involve the closure of the southbound carriageway of Station Road across the railway bridge from Monday 31 March until Tuesday 25 November. Additionally, one lane of the northbound carriageway will be closed for safety measures and to accommodate work in the central reservation. The local authorities plan to implement advance warning signage and signposted diversions to guide drivers around the closures. Preparation for the reconstruction will begin next week, with utility services being diverted from Monday 17 February to Saturday 8 March. During this preparatory phase, one lane in each direction on Station Road will be closed, although the road and footpaths will remain open to pedestrians and drivers. The heavier work on the Station Road bridge is scheduled to commence with full closures in both directions from Thursday 12 June to Monday 16 June, and from Thursday 3 July to Monday 7 July. These closures will coincide with weekend disruptions to the railway line itself, resulting in train services being diverted or replaced by bus services. However, the footway on the western side of the bridge is expected to remain accessible throughout the construction period. The reconstruction comes on the heels of recent work completed in Osmondthorpe – approximately 4km away – where engineers replaced an old bridge deck to improve conditions for longer and faster trains. The TRU aims to create a more efficient and reliable transport network in the region, improving connectivity for commuters and contributing to greener travel options. TRU sponsor Lucy Grogan said: “This latest major upgrade in its life is crucial in enabling TRU to transform rail journeys by better connecting towns and cities across the North. “We appreciate that this road closure will unfortunately cause inconvenience to the community, so we have worked closely with Leeds City Council to agree diversionary routes to help keep traffic moving, and we thank everyone for their patience and understanding.” Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Feb 14, 2025
New Civil Engineer (Bridge)
Hs2 | Delta Junction Construction Progresses With Completion Of First 472M Viaduct
The construction of High Speed 2 (HS2) has seen the completion of the River Tame West Viaduct, North Warwickshire – the first to be finished in the Delta Junction complex. This 472m single-track structure marks the first instance in the UK of a giant cantilever technique being employed for such a project. A team of 40 construction workers from Balfour Beatty Vinci JV (BBV), the contractor responsible for the Midlands section of HS2, utilised this innovative method to gradually move concrete segments into place, span by span. This approach not only enhances construction efficiency but also provides flexibility in the building process. The construction of the viaduct’s piers commenced in 2023, followed by the beginning of the concrete deck construction in early 2024. To date, 190 pre-cast concrete segments have been installed using the cantilever technique. Ultimately, the River Tame West Viaduct will form part of a larger structure comprising three railway tracks, including the ongoing construction of a double-track viaduct adjacent to the completed single-track segment. The two River Tame West Viaducts traverse the River Tame and will connect with the Curdworth Box, allowing high-speed trains to cross over the existing Birmingham to Derby railway. Construction of the 20 supporting piers started in 2023 and the first spans of the three-track configuration were completed in spring 2024. This initial phase involved placing the segments onto two 42m truss beams, moving them into place with a skidding trolley, and securing them by post-tensioning techniques. Following this, the giant cantilever structure was built, using a 22m high mast, including temporary post-tensioning cable stays and a 14m-high swivel crane. This crane facilitates the precise positioning of concrete segments into place one at a time until it reaches the 45m span length. The permanent post-tensioning tendons are then stressed to allow the removal of the temporary cable stays, leaving the permanent structure securely in place. The same process is repeated between each pier until all the spans are complete. This method traces its origins to Campenon Bernard, which later became a part of Vinci Construction. It is new to the UK, is set to facilitate the construction of nine out of the 13 viaducts at Delta Junction, which together will stretch over 6,500m. Delta Junction plays a crucial role in the HS2 line and rail network, connecting London, Birmingham, and northern regions of the UK. The junction consists of 13 viaducts and over 10km of track designed to navigate rivers, existing rail lines, local roads, and motorways. In addition to the River Tame West Viaduct, the project includes the construction of the single-track River Tame East Viaduct and two Water Orton Viaducts. Pre-cast segments are being produced at a dedicated factory situated in nearby Lea Marston and a total of 2,742 concrete segments will be necessary to complete all nine viaducts, with final installations projected to be concluded by late 2026. Last year, NCE spoke in-depth with HS2 Ltd, BBV and National Highways about how standards are being challenged in the construction of the Delta Junction viaducts. HS2 Ltd lead senior project manager for Delta Junction Sam Hinkley said: “The completion of the River Tame West single-track viaduct is a big milestone for the Delta Junction team. In this very complex construction area, we’re building a network of 13 viaducts to carry new high-speed trains over motorways, existing rail lines, rivers and floodplains. “Nearly 10,000 people in the West Midlands are delivering this world-class engineering, which will lay the foundations for Britain’s future rail network.” BBC pre-case segmental viaducts project manager Nicolas Gallone said: “This is the first time in the UK we’ve used this innovative technique to build segmental viaducts. It’s an efficient and flexible process using cable stays from the cantilever structure to keep the viaduct in place, while a mast and swivel crane are used to place each segment in place. “It’s a great achievement for the whole team and work now continues using this technique on the other eight pre-cast segmental viaducts in the Delta Junction.” Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Feb 13, 2025
New Civil Engineer (Bridge)
Bridge Design Error Causes Year Delay And £10-20M Cost Hike On Lincolnshire Road Project
Lincolnshire County Council’s Grantham Southern Relief Road project has been hit with a year’s delay and a cost hike of £10-20M due to a bridge design error meaning it cannot be installed as intended. This setback is related to the construction of a new bridge over the River Witham and the East Coast Main Line, which means the project will not be finished until 2026 and will now cost £158-168M. “This mistake related to the how the bridge was to be installed and us being told it couldn’t be pushed into place as intended due to concerns relating to specific wind conditions,” Lincolnshire County Council executive member for highways Richard Davies said. The project is being carried out by principal contractor Galliford Try and was designed by WSP. “The complexities of designing and constructing this relief road, particularly this bridge, are far beyond what we as a council can do directly,” Davies said. "That’s why top international engineering companies and experienced contractors were entrusted to handle the project. Although we oversee the scheme as a whole, we rely on our suppliers’ combined expertise. “When undertaking a project of this magnitude, all design work also undergoes a mandatory, additional layer of independent checking. Unfortunately, despite all of this, a mistake was made along the way that’s led to this new delay. "Safety comes first, so the work was halted so our designers and contractors could address the problem. “We’ve done everything you could reasonably expect us to do as the client for the scheme, but we feel we’ve been let down.” Installation of the bridge piers in November 2022 Davies said that the solution is nearly finalised but will see the timeline for the project shifted. The bridge’s placement over a span of 293m will now be carried out over a period of months. This operation will take place during overnight hours when train services have paused. Following this phase, further construction will occur on the east side of the site, including the lifting of new steel beams, alongside several months dedicated to concreting, installing safety barriers, and laying road surfacing. Davies continued: “Let me be 100% clear: while we may need to cover these extra costs initially, we will ensure that those responsible for this are held accountable and that every penny of taxpayer money will be recovered. “We are pursuing contractual and legal processes as a result of this error so are unable to comment any further on this at this stage for legal reasons. “For now, our priority now is getting this massive project back on track as soon as possible – and that means continuing to work closely with our appointed contractor and designers. “While this new delay is incredibly disappointing, we remain 100% committed to completing Grantham’s relief road. “As a local resident and business owner, I understand and share the frustration this delay will cause. But safety comes first, and even the smallest risk must be taken extremely seriously. “In the meantime, I want to thank everyone for their continued patience as we work towards completing this monumental project.” A Galliford Try spokesperson said: “Galliford Try continues to work in a collaborative manner with all the stakeholders on Grantham Southern Relief Road to ensure the safe and timely delivery of this vital piece of infrastructure. The challenges that have led to the reported delays relate to the design of the bridge across the River Witham and the East Coast Main Line and Galliford Try is contracted on a construct-only basis on the project.” WSP was contacted for comment. Grantham Southern Relief Road The overall Grantham Southern Relief Road project is a new 3.5km road delivered in three phases that intends to improve the town’s infrastructure and growth. Overview of Grantham Southern Relief Road Phase one saw the creation of a roundabout off the B1174 and was carried out by Fitzgerald Civil Engineering between 2015 and 2016. Phase two involved joining of the B1174 to the A1 trunk road, with Galliford Try starting work in 2019 and completing it in December 2022. Phase three preparatory works started in February 2020 and main construction started in April 2021. In November 2022, construction of the new bridge beams commenced. The scheme was due to complete this year this has now been revised to 2026 due to the bridge design issues. Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Feb 12, 2025
New Civil Engineer (Bridge)
Deck Panel Placement Underway On Sunderland’S £44M New Wear Footbridge
VolkerStevin’s construction of the £44M New Wear Footbridge in Sunderland has reached a significant milestone with the commencement of deck panel placement. The footbridge, which spans 250m, measures 10m in width and stands at a height of 30m above the River Wear, is a pivotal element in the Riverside Sunderland development initiative. This initiative involves over £1bn in investments aimed at revitalising the area by enhancing connectivity and public spaces. The bridge’s four main steel sections were transported to the site via barge from Victor Buyck’s fabrication yard in Belgium last summer. In total, the structure’s deck will feature 91 precast concrete panels, each measuring 10m wide. The panels are being installed using a specially designed trolley system that enables the north-south placement of each panel. A crane lifts each panel from the southern riverside park onto the trolley, which then manoeuvres it into position. Once adjacent to each other, the panels will be bonded using in-situ concrete to create a unified deck. Following the successful installation of all deck panels, work will commence on the final finishes of the bridge deck. The design of the New Wear Footbridge integrates a notable public artwork, the Keel Line, which stretches 292m and commemorates the 8,102 ships built in Sunderland’s historic shipyards. The reference design was provided by AtkinsRéalis, while detailed design contributions came from Arup and Knight Architects. The New Wear Footbridge is expected to significantly enhance pedestrian movement between the north and south sides of the River Wear, further supporting the ongoing transformation of the Sunderland waterfront. Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Feb 05, 2025
New Civil Engineer (Bridge)
Hs2 | Progress On Warwickshire ‘Green’ Bridge To Take Vehicles And Wildlife Over Railway
Main construction of a new “green” bridge to take both local traffic and wildlife over the High Speed 2 (HS2) railway near Kenilworth in Warwickshire has completed. The Stoneleigh Road bridge features a dual carriageway along with two dedicated nature corridors to ensure safe passage for local fauna crossing the high-speed railway. It is one of 16 similar structures being developed as part of the HS2 project. HS2 main works contractor Balfour Beatty Vinci (BBV) commenced piling work for the Stoneleigh Road bridge in October 2023, engaging a dedicated team of 50 construction workers at peak capacity. Recently, work has focused on finalising the physical structure, which measures 33m long and 42m wide. A substantial concrete pour, involving 1,900m3 of material, was completed to form the bridge deck in late 2024. The team has since been making the finishing touches to the bridge, including the installation of 32 parapets. With main construction of the bridge now finished, engineers are preparing to realign Stoneleigh Road over the bridge, alongside the development of a new roundabout that will connect to the entrance of Stoneleigh Business Park. To enhance the area’s biodiversity, hedgerows and vegetation will be planted in 9m strips flanking the newly realigned road, creating habitats for birds, small mammals and insects. The completion of the road realignment and the associated nature corridor landscaping is anticipated by autumn 2025, at which point traffic is expected to flow over the bridge. Work will now turn to realigning Stoneleigh Road to run over the bridge HS2 Ltd senior project manager Vicki Lee said: “A big thank you to everyone involved both onsite and behind the scenes as we reach this exciting next phase of Stoneleigh Road green bridge’s development, following a great deal of hard work. “What makes Stoneleigh Road bridge special is the addition of valuable green space either side, meaning wildlife can safely pass over the high-speed railway line. Wherever possible, it’s important we integrate green measures and multifunctional design features, creating a railway that blends into the character of the surrounding landscape.” BBV project manager George Shopland said: “We’ve recently completed a huge single-span deck pour on the Stoneleigh Road bridge and are finishing installing 32 parapets, each weighing nine tonnes. This is another significant achievement for the Balfour Beatty VINCI team. “Completing this work means we’re entering the next exciting phase of construction, which includes realigning Stoneleigh Road over the top of the bridge and creating two green corridors on both sides of the carriageway.” Visualisation of the completed green bridge with HS2 runnign beneath, and realigned Stoneleigh Road running on top to new roundabout Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Feb 05, 2025
New Civil Engineer (Bridge)
Hs2 Project Team Reveals Challenges Of 4-Day Continuous Viaduct Slide Over Road And Railway
The High Speed 2 (HS2) project team behind the construction of the Small Dean viaduct have revealed the challenges behind sliding the 4,500t, 345m long structure over a road and a railway in one continuous stage over four days. Constructing the viaduct marks the heaviest and longest single stage viaduct deck slide of the whole HS2 project so far, culminating four years of work that has involved preparing the site, diverting utilities and realigning the road. The four day operation was completed yesterday, 2 February, and involved sliding the deck across the A413 and Chilterns Railways line near Wendover in Buckinghamshire in one go. This viaduct, as well as nearby Wendover dean viaduct, have innovative “double composite” structures, with layers of reinforced concrete on top and bottom of the steel structure. The side of the Small Dean beam also features prominent deck stiffeners which help to manage the structural forces while allowing for a more structurally efficient span. The viaduct is being delivered by HS2’s main works contractor, EKFB, made up of Eiffage, Kier, Ferrovial Construction and Bam Nuttall, working with their design partner, ASC (a joint venture between Arcadis Setec and Cowi). An aerial view of the viaduct in its final position Speaking on site in the midst of the four-day slide, EKFB senior project manager Martin Gamble told NCE: “It’s the only HS2 viaduct that has a road and a railway involved and believe me that has been a challenge at times over the last few years. “The complexity of the interfaces with the road and railway have provided a real challenge which, with the assistance of Network Rail and Buckinghamshire Council, we have risen to and overcome.” The viaduct’s concrete and steel deck was assembled to its full 345m length before the slide began. Most of the precast concrete deck slabs were also installed in advance of the launch. These decisions increased the weight of the slide but allowed the team to save time during the later stages of the project. HS2 Ltd project manager Jason Bicknell told NCE that “we tend to have to launch viaducts over three or four stages, this one we were able to do it all in one go”. One reason for the team deciding to do the slide continuously concerned the topography, according to Bicknell. Having a large and long embankment allowed them to build the whole viaduct before beginning to move it. “The second reason we’ve done it this way is because it means we only have to close the A413 for one day, which reduces disruption to locals,” he added. He further explained that, while doing it in one operation presented challenges, the situation also provided an opportunity. “This is a really unique situation, it was a big challenge at the design stage to come up with something that would allow is to cross and dissect the railway all at the same time,” he said. “We’ve worked continuously throughout the whole thing next to the railway [in preparation], building the six piers we’ve got between the two large abutments and they are piled quite deep; they’re about 45m deep piles.” Small Dean Viaduct deck in position above the railway, February 2025 One of the hardest elements of construction the viaduct involved the lifting of the structure’s hammerhead piers to hold the deck. EKFB agent Elliot Bright explained that they “are made offsite and brought in before we lift them in. They’re 45t, which is quite heavy, we’re able to install one in about half an hour. “[After lifting the piers into position], the next bit is lifting in the prefabricated reinforcement cage. This is probably the most difficult element we had with the piers because you have to fit them inside where there’s only 30/40mm gap all the way around. “They don’t fit very well, so you have to get them in and wobble it around, look into the cage and see where the conflicts are. “The first one took us about eight hours to do but the last one took about an hour and a half so we got a bit better by the end.” The nose of Small Dean viaduct deck over the A413 With the deck now in position, engineers can begin the challenging job of lowering it by 600mm onto the permanent bearings, which will support the full weight of the viaduct. The two-month long operation will see it carefully lowered by 200mm at a time, pier-by pier, until the whole deck settles into its final position. The viaduct is one of only two places in the Chilterns where the HS2 route will be above ground level, with the underside of the viaduct just 6m above the road, supported by the huge Y-shaped piers. The piers to support the viaduct deck were completed in April last year. The video below includes a timelapse of the Small Dean viaduct deck slide operation. Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Feb 03, 2025
New Civil Engineer (Bridge)
Delays In Investment Could Compromise Safety As ‘Disquiet’ In State Of Assets Grows, Ice Warns
Postponing investment in the UK’s transport infrastructure could lead to serious safety concerns against a backdrop of “disquiet” concerning the state of assets, a new report by the Institution of Civil Engineers (ICE) has warned. The ICE’s new State of the Nation report, titled Infrastructure in 2025, identifies urgent areas that require strategic funding and long-term planning, focusing on transport, energy and water systems. It states that there are serious concerns that are emerging regarding the condition of critical infrastructure, particularly ageing highways assets, and more must be done to ensure the safety of the UK public going forward. The report further reveals how there exists a growing disquiet about the resilience of many transport assets, with bridges being the biggest concern. This information was gleaned from three roundtable discussions the ICE held between technical experts working across the UK. As quoted in the report, the experts said: “Parts of the transport network are perhaps not as safe as the public thinks, while some structures should have usage restrictions but don’t.” ICE further reports that across Europe highway authorities have been expressing grave concerns about the state of their assets. On 16 April 2024, members of the Conference of European Directors of Roads issued a stark warning about the deterioration of key infrastructure they own and operate. Discussing this, the report cites the Dublin declaration, signed by national authorities collectively managing more than 1M.km of highways. The declaration states: “The preservation of the pan-European road network requires close attention, as it is showing its age after decades of service. “This particularly concerns the most critical parts of our networks: our bridges and tunnels.” While ICE makes it clear that highways are deteriorating, not just in the UK, but all over Europe, it is also keen to point out how there is a degree of inertia around engineers highlighting the need to do something. Experts at the roundtables concluded: “How should professionals communicate when it’s not the case that a structure is ‘going to fall down tomorrow’ but it has changed from being acceptably safe to unacceptably safe?” With this in mind, the ICE is urging more engineers to come forward regarding the dangers posed by the ageing assets before it’s too late. The report states: “Members need to be honest about the risks such assets carry, which means helping non-technical decision-makers to understand the ramifications of choosing to invest elsewhere. “If such facts [the dangers and disquiet about them] were more widely known, the government would have to act. “Engineers need to warn policy-makers about the risks. Politicians don’t tend to grasp these until an asset fails. Even then, the attention that a problem receives in the media and political sphere tends to be fleeting – and promises can be clawed back.” The report further highlights the accelerating impact of climate change on the UK’s aging infrastructure, suggesting that without prompt investment, the safety and reliability of essential services could be severely compromised. ICE is urging policymakers to break away from the cycle of short-term thinking and to engage in collaborative planning that prioritises long-term solutions. It states: “Another difficult conversation is needed about the prevailing maintenance practice that can be described as changing the brake pads while driving. “One-year funding windows, budget cuts and the advancing age of assets have been rendering this approach unfeasible. But, in any case, it’s not fair on the front-line workers who must often make repairs in dangerous conditions while facing the ire of frustrated road users.” In order to combat the issues, the ICE has warned that some structures may require usage restrictions and is advocating for initiatives such as the bridge near-miss reporting campaign to enhance safety awareness and maintenance. The report states: “With such concerns in mind, the ICE has been engaged in a joint initiative encouraging bridge designers, builders and maintainers worldwide to take more responsibility for preventing further calamitous failures. “In May 2024, it joined forces with the UK Bridges Board and the Bridge Owners Forum to encourage civil engineers and other professionals to report close calls and so-called precursor events to Confidential Reporting on Structural Safety UK (CROSS-UK). “Improving people’s knowledge, recognition and reporting of precursor events is known to be vital in preventing these from leading to more serious incidents. “Examples of precursor events include the unexpected failure of a component; structural cracks that appear or reopen after repairs; and other signs of distress that can’t be explained. This approach – endorsed by the Infrastructure Client Group – reflects best practice originally established in the aviation industry.” A further measure of ensuring the safety of critical infrastructure the report notes is the recognition that advanced digital tools can enable assets to be maintained and renewed in “more productive, cost-effective and sustainable ways.” The Forth Road Bridge is used as case study in the report, where this “well-worn” 60-year-old structure is being “nursed” using digital tools such as structural health monitoring. This solution is known as an acoustic monitoring system, which uses tiny microphones that are sensitive enough to detect the sounds made by breakages in the suspension cables’ 5mm-diameter wires. Beyond the current state of assets, the convergence of several factors, namely climate change, lack of maintenance, supply chain issues and a skills gap, is further impeding the infrastructure industry by creating a “perfect storm” for the UK. Further issues the report highlights include; Energy security: With energy security becoming a pressing concern amid the climate crisis, the report calls for diversification of energy sources. It suggests that tidal energy offers significant potential and recommends that civil engineering professionals explore this resource. The UK aims to cut emissions from 1990 levels by 81% by 2035, making it essential to expand renewable energy options. Water supply challenges: The water sector is facing mounting pressures from climate change, ageing infrastructure, and the demand for decarbonisation. The report predicts that the UK’s daily water demand may surpass supply by more than a third within 25 years. While initiatives to reduce leakage and build new reservoirs are already in motion, increasing the recycling of treated wastewater is also presented as a vital part of the solution. ICE president Jim Hall said: “Now is the time to establish a clear vision of how infrastructure can contribute to a better future for the UK. We need real prioritisation and long-term strategic thinking, and we need to apply creative solutions to the challenges we face. “All this needs to be supported by committed investment. "This is not a report full of wild, uncosted, undeliverable ideas. It is the reasoned opinion of practitioners and researchers at the cutting edge of infrastructure." Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Jan 30, 2025
New Civil Engineer (Bridge)
Essential Repairs To 4 Bridges In Somerset To Disrupt Rail Services Next Week
Next week Network Rail is set to begin critical repairs on several bridges and conduct essential drainage work in Somerset, which will lead to train service disruptions between Taunton and Weston-super-Mare. The repair work includes extensive renovations on four bridges. Notably, the River Brue bridge requires a complete deck replacement, necessitating the removal of the track above. This will be accompanied by crucial repairs to the bridge’s steelwork and masonry, waterproofing and the re-establishment of the track and surrounding stonework. Similarly, the Middle Drove bridge (pictured) will undergo major repairs, including a full replacement of its bridge span. New sections will be positioned using cranes, along with masonry restoration. The Lympsham Bridge will also be addressed, involving structural repairs and waterproofing, as well as the relocation of cables. The Somerset Bridge requires strengthening and repair work to enhance its structural integrity. Preparatory activities for these bridge works initially commenced in late November for the Middle Drove bridge and early December for the River Brue bridge, paving the way for the intensive repairs scheduled for next week. In conjunction with the bridge maintenance, Network Rail will refurbish track drainage systems at Uphill and Dunball, which entails laying new pipes and installing inspection chambers. Additionally, survey teams will conduct inspections in the Highbridge and Burnham area using advanced technology to ensure the proper functioning of existing drainage systems. While the rail line is closed, minor track maintenance, including adjustments to rail points and necessary welding and grinding tasks, will also take place. From Monday 3 February to Friday 7 February, no trains will operate on this section of the line, with replacement bus services provided for affected passengers. Despite the closures, train services between Taunton and London Paddington, as well as Cardiff, will continue, albeit with some delays. Trains from Taunton to Bristol Temple Meads will be diverted via alternative routes, extending journey times by as much as an hour. This maintenance work aims to reinforce the safety and reliability of railway operations and enhance resilience against potential flooding in the future. Follow-up work on the Middle Drove and River Brue bridges is expected to continue until 24 June, with a full road closure on Accommodation Road anticipated until mid-June. Network Rail programme manager Scott Pillinger said: “We have essential maintenance and repair work taking place on multiple bridges over this five-day period, ranging from strengthening works to full replacement. “Alongside this there will be drainage and track work, all of which is vital to ensure the continued safe and reliable running of the railway. “Working over a solid week is the most efficient way to get this work completed and minimise disruption overall and I’d like to thank passengers and residents for their patience while this work is carried out.” GWR station manager for the Taunton area Adam Hopkins said: “This work forms part of an ongoing programme of investment, helping to ensure we can continue to provide consistent and reliable services. “GWR trains will still run between London Paddington and Taunton or Weston-super-Mare, while CrossCountry trains will run between Bristol Temple Meads and Taunton via a diversionary route. “Rail replacement services will be provided for those stations between Taunton and Weston-super-Mare. “As an alternative, rail tickets can also be used to travel on local buses calling at Weston-super-Mare, Highbridge & Burnham, Bridgwater or Taunton. “It’s important that customers are aware these alternative travel arrangements will make journey times a little longer, so please do check before you travel.” Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Jan 29, 2025
New Civil Engineer (Bridge)
£31M Lambeth Bridge Structural Improvement And Pedestrian And Cyclist Safety Upgrade To Commence
Transport for London (TfL) is set to commence an extensive upgrade project at Lambeth Bridge including “urgent” structural maintenance and safety improvements for cyclists and pedestrians. In addition to safety improvements, Lambeth Bridge requires urgent structural maintenance including waterproofing and repairs to the bridge deck. To streamline these efforts and minimise disruption, TfL intends to execute the safety upgrades concurrently with the required maintenance work. The initiative's safety related works include the replacement of the existing roundabouts at both ends of the bridge with signal-controlled junctions, addressing significant safety concerns highlighted by recent collision statistics. According to TfL The northern junction of Lambeth Bridge has been identified as the most hazardous location in the capital for cycling accidents. Between 1 September 2021 and 31 August 2024, 22 of the 31 recorded incidents involved cyclists. TfL said the statistic underscores the pressing need for intervention, especially following a fatal cycling collision at this site in 2015. As part of the safety upgrade, TfL plans to add a dedicated cycle lane on the bridge and install new signalised pedestrian crossings, enhancing overall access and safety for those travelling on foot or by bike. These modifications are integral to the Mayor's Vision Zero initiative, which aspires to eradicate deaths and serious injuries on London’s transport network by 2041. A TfL spokesperson confirmed the estimated full cost of the project is £31M, which includes all the project design and development works to date, preparatory and utility pre-works and the cost of construction, including risk. TfL said the project will also facilitate better connectivity to nearby cycling routes, notably Cycleway 8 to the north and Cycleway 5 to the south of the bridge, thereby enhancing cycling journeys towards destinations including Battersea and Waterloo. A series of full and partial closures will be implemented from 30 January until 15 December 2025 to facilitate these works, with the first phase creating a complete closure each night from 21.30 to 05.00 until 7 February. Further closures will occur to install traffic management changes, followed by directional closures impacting motorised vehicles but allowing pedestrian access. TfL’s aim to improve road safety is demonstrated through its ongoing Safer Junctions programme, which has completed enhancements at 45 junctions across London. Ongoing efforts also include consultations for safer walking and cycling initiatives in areas such as Shoreditch, collaborating with local councils to improve infrastructure and reduce road danger. TfL head of projects and programmes Julie Lewington said: "We are committed to Vision Zero, the Mayor's goal to eliminate death and serious injury from the transport network, and these changes will play a vital role in reducing danger at this key junction. We’d like to thank Londoners for their patience while these works are taking place and would encourage drivers to use alternative crossings where possible. Roads in the surrounding area are expected to be busier than usual so please plan ahead and check before you travel." Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Jan 24, 2025
New Civil Engineer (Bridge)
Lambeth Bridge Structural Improvements And Pedestrian And Cyclist Safety Upgrade To Commence
Transport for London (TfL) is set to commence an extensive upgrade project at Lambeth Bridge including “urgent” structural maintenance and safety improvements for cyclists and pedestrians. In addition to safety improvements, Lambeth Bridge requires urgent structural maintenance including waterproofing and repairs to the bridge deck. To streamline these efforts and minimise disruption, TfL intends to execute the safety upgrades concurrently with the required maintenance work. The initiative's safety related works include the replacement of the existing roundabouts at both ends of the bridge with signal-controlled junctions, addressing significant safety concerns highlighted by recent collision statistics. According to TfL The northern junction of Lambeth Bridge has been identified as the most hazardous location in the capital for cycling accidents. Between 1 September 2021 and 31 August 2024, 22 of the 31 recorded incidents involved cyclists. TfL said the statistic underscores the pressing need for intervention, especially following a fatal cycling collision at this site in 2015. As part of the safety upgrade, TfL plans to add a dedicated cycle lane on the bridge and install new signalised pedestrian crossings, enhancing overall access and safety for those travelling on foot or by bike. These modifications are integral to the Mayor's Vision Zero initiative, which aspires to eradicate deaths and serious injuries on London’s transport network by 2041. TfL said the project will also facilitate better connectivity to nearby cycling routes, notably Cycleway 8 to the north and Cycleway 5 to the south of the bridge, thereby enhancing cycling journeys towards destinations including Battersea and Waterloo. A series of full and partial closures will be implemented from 30 January until 15 December 2025 to facilitate these works, with the first phase creating a complete closure each night from 21.30 to 05.00 until 7 February. Further closures will occur to install traffic management changes, followed by directional closures impacting motorised vehicles but allowing pedestrian access. TfL’s aim to improve road safety is demonstrated through its ongoing Safer Junctions programme, which has completed enhancements at 45 junctions across London. Ongoing efforts also include consultations for safer walking and cycling initiatives in areas such as Shoreditch, collaborating with local councils to improve infrastructure and reduce road danger. TfL head of projects and programmes Julie Lewington said: "We are committed to Vision Zero, the Mayor's goal to eliminate death and serious injury from the transport network, and these changes will play a vital role in reducing danger at this key junction. We’d like to thank Londoners for their patience while these works are taking place and would encourage drivers to use alternative crossings where possible. Roads in the surrounding area are expected to be busier than usual so please plan ahead and check before you travel." Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Jan 24, 2025
New Civil Engineer (Bridge)
Australian Study Uses Neural Networks And Ai Algorithms To Detect Defects In Bridges
An Australian university study has successfully used artificial intelligence (AI) algorithms in conjunction with neural networks to detect defects in bridges in real time. A neural network, as defined in the Oxford Dictionary, is a computer system modelled on the human brain and nervous system. The Australian Catholic University research developed a method for the real-time structural health monitoring of bridges, using the Chumchup, Gocong, Ongdau and Ongnhieu Bridges in Vietnam to test it. This new AI program uses bridge vibration data to accurately identify minor structural flaws before they become critical and then can alert maintenance crews. Australian Catholic University associate professor for computational intelligence and Social Good Lab women in AI director Niusha Shafiabady led the multinational research team. To develop the machine learning program, the Australian and Vietnamese researchers used the concept of a loss factor, which represents the process of energy dissipation across different vibration states, as a key indicator of structural health. “Loss factor is, if you want to think of it in our daily life? If you’ve ever jumped on a trampoline, some of the energy goes into making the trampoline stretch and move and some of that energy doesn't come back to you,” Shafiabady said. “That is the lost energy in the bridges, the loss factor is actually that lost energy, so it measures the energy that doesn't come back.” This energy that is lost is actually turned into heat or it causes internal friction. The research team analysed the vibration patterns using loss factor, in the bridges to assess their structural health status. The results demonstrated that the energy dissipation of the bridge during operation could be categorised into signals from three distinct sources: structural responses, defects-related indicators and noise interference. By monitoring variations in the loss factor over time, the model was able to identify early signs of structural deterioration. To paint a complete picture, the study used three different scenarios on the various bridges. “The first scenario was when we had a heavy vehicle load on those bridges, for example, trucks or containers and the vehicles that exceeded the standard load limit when they were crossing the bridge,” Shafiabady said. “The second case study was related to the light vehicle load that usually happens with small cars and motorcycles when it is not rush hour. At that time, the traffic was really not very bad “The third case study was when we had heavy traffic, because one of the aims of these studies was looking at managing the traffic. We considered the high traffic scenario when we had different types of cars on the bridge, and public transport.” Using the four different bridges and three scenarios, the study assessed the loss factor and compared the results using different AI algorithms to collect data on the bridges structural health. “[This was done] to detect early structural changes when we saw that the loss coefficient is changing,” Shafiabady said. “Then we took it as a sign that those changes mean that there exists some fatigue or damage in some areas of the bridge.” While using the neural networks can help to identify serious defects in bridges, Shafiabady said that the purpose of the study is for the AI to flag when pre-emptive maintenance is required. “Applying these AI methods was primarily for pre-emptive maintenance,” she said. “It’s not necessarily something needed to have immediate attention to that bridge, but just to avoid issues like catastrophic problems that could happen if the maintenance teams didn't look after the bridge.” The neural networks operate within the bridge and in conjunction with the AI by making specific decisions separately. “The AI methods that we have applied for the analysis are a combination of different neural networks where one neural network will make a basic decision, or one part of decision, and then that decision goes to another neural network to look into it further and finalise the decision,” Shafiabday said. “This process, we hope, will allow the AI to come up with the outcome that we're looking for.” The team behind the study believes utilising artificial neural networks trained to detect defects in bridges could revolutionise safety practices and save lives from potential structural failures. “This diagnostic framework could save lives,” Shafiabady said. “People worldwide use bridges daily to travel between home, work and school. Yet there are many examples that show, without proper defect detection and maintenance, these structures can fail, risking injury and death.” Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Jan 23, 2025
New Civil Engineer (Bridge)
Network Rail To Commence Abseiling For £1M Renovation Of Stockport Viaduct
Network Rail is moving onto the challenging next stage of restoration of the Grade II* listed Stockport Viaduct, a historic structure that has been an integral part of rail transport since its completion in 1840. The viaduct, which spans 550m and rises 34m, facilitates the movement of approximately 398 trains daily between the West Coast Main Line and Manchester Piccadilly. Last year, the restoration efforts began with the removal of overgrown vegetation and graffiti, alongside extensive repairs to the viaduct’s impressive 11M bricks. Thus far, work has been completed on 23 of the viaduct’s 26 spans, restoring the structure to its former glory. As part of the ongoing maintenance, engineers are planning an ambitious phase of the project, which will involve abseiling down the structure to address the remaining arches. This work is crucial to ensure the safety and longevity of the viaduct, which is a prominent feature of the local landscape, crossing both the M60 motorway and the River Mersey. To facilitate the repairs safely, essential road closures have been announced. From Monday, 17 February to Sunday, 2 March 2025, the M60 will be closed in both directions between Junction 27 and Junction 1. The road beneath the viaduct will be closed nightly from 10pm to 6am over a span of 13 nights. Network Rail has assured that diversionary routes will be clearly signposted to minimise disruption to motorists. In addition to the viaduct repairs, Network Rail is also updating the local community on the upcoming project to replace the Greek Street bridge, which allows cars to travel over the West Coast Main Line between Edgeley and Stockport town centre. These projects reflect a significant investment in the region’s infrastructure, aiming to enhance both safety and the aesthetic appeal of essential transport links in Stockport. Network Rail principal route engineer for the North West route Rob Stephens said: “Stockport Viaduct is an important piece of cultural heritage for the railway and the Stockport community. We are proud to be responsible for its upkeep. “The final stage of the project will take place this February, as we want to make sure the nighttime road closure causes as little inconvenience as possible for the people of Stockport. “The recent work means the overall appearance of the viaduct is much improved, but it also reduces the risk of damage caused by overgrown vegetation and graffiti. “Managing plant growth on viaducts such as this is important in maintaining train performance as trees and shrubs can obscure signals and interfere with the overhead lines that power trains.” Stockport Council cabinet member for parks, highways and transport services Grace Baynham said: “Stockport Viaduct is an iconic feature of our town and it is great that Network Rail has been carrying out the restoration of this much loved structure. “With the £1bn regeneration of our town centre continuing apace, it’s even more important that our historical, listed, landmarks look their absolute best. “I’m sure our residents and visitors have seen the improvement in the areas that have already been completed. “We appreciate everyone’s patience while this vital final section of the work is completed.” MP for Stockport Navendu Mishra said: “I am delighted that Stockport Viaduct is being cleaned and repaired to its former glory. I have raised concerns in Parliament about the condition of the Viaduct and called for funding to cover cleaning, maintenance and repair costs to this impressive and essential infrastructure. I congratulate Network Rail for recognising and embarking on this huge revamp project, which will benefit people who live, work and travel through Stockport.” Like what you've read? To receive New Civil Engineer's daily and weekly newsletters click here.
road-bridge
Jan 22, 2025