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

  • Expanded and branded: RER Vélo bike project
    April 29, 2022
    Connected up cycling is becoming more important in France as the way to keep cyclists from giving up their COVID habit of pedalling to work and for pleasure. David Arminas reports.
    Read More
  • Plans in hand for Slovakia’s longest tunnel
    June 16, 2014
    In Slovakia plans are being made for a new project that will become the country’s longest tunnel when it is complete. Salini Impregilo is the contractor heading the project. The work looks set to cost in the order of €410 million and the project is due for completion in late 2019 or early 2020. Although there was a lower priced bid for the project, this was excluded due to technical problems relating to the proposed tunnel exits. The Visnove Tunnel will measure some 7.7km long and will be constructed in the
    Read More
  • Expanded and branded
    October 4, 2022
    Connected-up cycling is becoming more important in France as the way to keep cyclists from giving up their COVID habit of pedalling to work and for pleasure. David Arminas reports
    Read More
  • Colas-built bridge opens over River Ipoly
    August 9, 2023
    Colas divisions in Hungary and Slovakia cooperated on constructing a recently opened bridge between Ipolydamasd in Hungary and Helemba in Slovakia.
    Read More

Highlighted Content