Skip to main content

Peruvian highway has highest tunnel

A new tunnel connection is helping boost connectivity in Peru, improving access to remote areas Building the tunnel has been an important project as Peru has an imbalance in population distribution with 54.6% of its inhabitants concentrated in the areas along the Pacific Ocean, while only 32% of the population lives in the Andes highlands and 13.4% in the Amazon tropical jungles. The imbalance is acute given that the tropical jungle areas account for 60% of the country’s national territory. Economic deve
October 2, 2014 Read time: 3 mins
Ventilation in the tunnel portal has helped during construction
A new tunnel connection is helping boost connectivity in Peru, improving access to remote areas

Building the tunnel has been an important project as Peru has an imbalance in population distribution with 54.6% of its inhabitants concentrated in the areas along the Pacific Ocean, while only 32% of the population lives in the Andes highlands and 13.4% in the Amazon tropical jungles. The imbalance is acute given that the tropical jungle areas account for 60% of the country’s national territory. Economic development also reflects this disequilibrium, due to a concentration of economic activity in the national capital. The city of Lima and its metropolitan area is home to 29% of Peru’s population.

The country has benefited from strong economic growth during the last 18 years, some of the best economic growth indexes in all of South America; however, the transport infrastructure has not grown as rapidly as the economy. The region of Ancash, located in the north-west of the country, provides a key example. Ancash has suffered poor transport without a highway connecting it with the interior of the country, which would allow it to export its products internationally through the border with Brazil.

However the new highway running from Carhuaz-Chacas-San Luis is of strategic importance to improve transportation for this region. It will not only permit an increase in exports of locally produced products, but will also open new areas to tourism. For the latter, the route of the new highway runs past snow-capped mountain peaks and over 20 lakes in the Conchucos area, a short distance from the Huascaron Mountain Peak. This new highway will make a significant reduction in journey times for local inhabitants, who currently require 8-9 hours to make the trip between Carhuaz and Chacas, but will see this slashed to 2½ hours. The new road will go through the new Punta Olimpica Tunnel. The shorter distance will lower running costs for vehicles and promote development of agricultural production in the area. The Carhuaz-Chacas-San Luis highway, which runs for 100km, will have a 44km section that traverses the Huascaron National Park and improve the lives of over 300,000 people in the surrounding area.
The road starts at the outskirts of Carhuaz, some 2,647m above sea level and ends in the town of San Luis at an altitude of 3,051m above sea level. The route follows the existing road called “Callejon de Huaylas” (Huaylas Alley) up to 49km, where it runs into the highest road tunnel in the world.

The Punta Olimpica Tunnel lies at an altitude of 4,738m above sea level. It has a total length of 1,380m and has been constructed in particularly challenging conditions. The altitude places high stress levels on equipment as the thin air means diesel engines and electric motors are more prone to overheating and cannot be loaded as heavily as at lower altitudes. For internal combustion engines in particular, the altitude also affects combustion and turbocharging and they have to be specially configured for working at height. Similar stresses have been placed on the personnel and winter conditions can be particularly tough at this altitude.

Related Content

  • Peru’s Oyón -Ambo Highway presents challenges
    August 30, 2022
    Peru’s Oyón-Ambo highway project represents a landmark in construction for the country, while facing significant technical challenges – Paula Chapple, editor of Carreteras Pan-Americana (CPA), writes
  • Peru plan positive
    March 5, 2012
    Peru's Callejon de Huaylas-Chacas-San Luis road is to be improved and upgraded in a deal worth US$145 million. The road lies in the Ancash region and will be upgraded over a 99km stretch under the plan. The improvement work will be carried out by the Brazilian contractor Odebrecht, which is already active in the Peruvian market. This road upgrade forms part of Peru's plan to boost its transport links and help develop the economy.
  • New Peruvian road tunnel link
    October 19, 2022
    Construction is underway for a new Peruvian road tunnel link.
  • Paso de las Leña tunnel between Argentina and Chile
    December 22, 2016
    A new tunnel between Chile and Argentina will boost trade and transport between the two countries - Mauro Nogarin writes The international Tunnel Paso Las Leñas will stretch 11.5km at 2,050m above sea level through the Andes. Once complete, it will greatly improve the connectivity and integration between the Chilean O'Higgins region with the Argentine Mendoza region.