In a defining moment for Peru’s transport infrastructure, PROINVERSIÓN, the country’s Private Investment Promotion Agency, has announced it will award the monumental Longitudinal Highway of the Sierra Section 4 project this July.

This colossal undertaking, structured as a Public-Private Partnership (PPP), is pegged at a staggering US$1.582 billion of project finance and is poised to breathe new life into one of Peru’s most rugged and logistically challenging regions.

Stretching a total of 965.2 kilometres through the heart of the Andes, this project is far more than just a highway upgrade. It’s a transformative corridor that promises to boost regional trade, enhance rural connectivity, and deliver safer, more efficient transport across the country’s highland spine.

The Longitudinal Highway project isn’t a one-size-fits-all fix. It consists of three distinct components, each tailored to tackle different challenges along the route:

The project’s lifespan is set at 25 years, encompassing everything from financing and construction to operation and ongoing maintenance. This long-term commitment reflects a holistic view of infrastructure development that favours durability and lifecycle cost-efficiency over short-term fixes.

Eight heavyweight consortia and companies have thrown their hats into the ring, each bringing a wealth of experience and international expertise:

The strong interest from both local and global players underscores the strategic significance of this corridor. It also reflects investor confidence in Peru’s commitment to transparent, well-structured PPP project finance.

The Sierra spine is no easy terrain. Rugged, elevated, and often underserved by modern road networks, the central highlands of Peru present significant mobility challenges. This corridor is essential not just for local communities, but for linking major economic nodes across the nation.

By improving access and reliability, the project is expected to:

The US$1.5+ billion investment is structured to attract private sector capital under a PPP model that shares risk across public and private partners. According to PROINVERSIÓN, the project will be governed by a performance-based payment scheme, ensuring that the concessionaire is incentivised to maintain high standards throughout the 25-year lifecycle.

“This PPP model allows the Peruvian State to promote efficient, sustainable infrastructure by relying on private-sector experience and resources,” stated a PROINVERSIÓN spokesperson.

The payment scheme also includes availability payments, tying compensation directly to the road’s performance, rather than traffic volumes. This ensures that public service remains the priority, regardless of fluctuations in demand.

In light of Peru’s vulnerability to climate-related disruptions, the project incorporates a strong emphasis on environmental and geotechnical resilience. Design specifications will address issues such as landslides, seismic activity, and seasonal flooding, which frequently plague the Andean region.

Furthermore, there is a push to integrate low-carbon construction methods and modern monitoring systems. These include smart sensors for structural health monitoring and intelligent traffic management systems, which could pave the way for smarter infrastructure policy across Peru.

Peru’s infrastructure gap has long been a bottleneck to broader development. According to the World Bank, the country needs to invest at least 4.5% of its GDP annually to bridge the deficit. Projects like the Longitudinal Highway are vital steps in this direction.

Improved road networks, especially in hard-to-reach highland areas, can unleash economic potential by lowering trade costs, boosting tourism, and enabling decentralised industrial growth.

“Better roads mean better lives,” as one local mayor put it during a public consultation event. “This highway isn’t just asphalt. It’s access to opportunity.”

The final award of the concession is expected in July, with financial close projected shortly after. Construction and mobilisation will begin thereafter, although timelines will depend on permitting and environmental compliance procedures.

Given the scale of the project, it could take several years before all segments are fully delivered, but milestones will be closely tracked by PROINVERSIÓN and the Ministry of Transport and Communications.

With an eye on inclusive growth and sustainable development, the Longitudinal Highway of the Sierra Section 4 is more than just a ribbon of road across Peru’s highlands. It’s a lifeline for isolated communities, a catalyst for rural prosperity, and a clear signal that Peru is serious about infrastructure-led development.

If executed with the transparency, efficiency, and foresight promised, this megaproject may very well become a benchmark for future PPPs across Latin America.