France’s Chambon Tunnel on D1091 is final reconstruction phase

The reinforced Chambon Tunnel in the southeast French Alps region will open on schedule by the end of the year. The tunnel, which carries the D1091, was partially reopened at the end of last year following a landslide in 2015 along the mountain through with the bore is located. Local media report that from the end of this month, the tunnel will be closed again for the final phase of lining work. The road connects Bourg d’Oisans and the Col du Lautaret and Col du Galibier.
August 17, 2017 Read time: 2 mins
RSSThe reinforced Chambon Tunnel in the southeast French Alps region will open on schedule by the end of the year.


The tunnel, which carries the D1091, was partially reopened at the end of last year following a landslide in 2015 along the mountain through with the bore is located. Local media report that from the end of this month, the tunnel will be closed again for the final phase of lining work. The road connects Bourg d’Oisans and the Col du Lautaret and Col du Galibier.

The D1091 follows the edge of Chambon Reservoir which was built in 1935. The road previously ran in the valley but had to be relocated to the reservoir’s edge and was constructed at the same time as the reservoir.

To help accommodate traffic during tunnel closure, the central government paid around €24.4 million diversions including a 5.3km route secours - emergency road - along the opposite edge of the reservoir. However, the RS is for passenger vehicles and restricted to trucks of 3.5 tonnes.

Road Structures

Related Content

  • East End Crossing Project—Availability payment P3 in action
    July 14, 2017
    Indiana exercised its authority to use a P3 contract when it partnered with Kentucky for new bridges across the Ohio River. Barney Allison and John Smolen* explain the groundbreaking availability payment deal. Earlier this year, traffic began rolling over the new tolled Lewis and Clark Bridge spanning the Ohio River from northern Kentucky to southern Indiana. The cable-stayed bridge is part of the award-winning Ohio Bridges Project to untangle traffic within the greater metropolitan area of Louisville, Kent
    Read More
  • Australia: Consortium ready to abandon Melbourne’s East West Link
    March 10, 2015
    The East West Connect consortium is set to abandon Melbourne’s East West Link contract in return for a payment of between US$400 million and $535 million, according to media reports. But the Victoria state government is challenging the claim by East West Connect whose partners include Lend Lease, Acciona, Capella Capital and Bouygues. Instead, the government wants East West to payback around $153 million which the consortium allegedly received when the toll road contract was signed, reported the Herald Sun
    Read More
  • Sandvik’s Turkish delight at groundbreaking tunnel vision
    May 20, 2014
    Turkey’s longest, and what will be the world’s fourth longest, highway tunnel is being built under Mount Ovit in the northeast of the country. Sandvik Construction is playing a vital role in the construction of the giant new structure, which will enable all-year-round access to what is a relatively remote and often snow-blocked part of Anatolia Having had their freedom of movement blighted for many years by wintertime snow blocking the D925 highway, along with narrower roads and passes, at Mount Ovit, resi
    Read More
  • Mexico’s new highway for Oaxaca
    May 3, 2023
    Mexico’s Oaxaca State is to benefit from a major new highway link – Mauro Nogarin and Mike Woof report
    Read More

Highlighted Content