Luxembourg's Roads Administration has announced that the second motorway tunnel maintenance and cleaning campaign for this year will begin on Monday 8 August and will last until the end of October 2022.

This campaign includes the preventive and curative maintenance of safety equipment, control of the operation and the interaction of the various equipment as well as the cleaning of the walls of the tunnels, cameras and variable signalling, among others.

In order to reduce the impact on traffic and while taking into account coordination with other sites, maintenance and cleaning operations in tunnels will mostly be carried out at night.

The following tunnels and game passages are concerned: Grouft, Rëngelbour, Stafelter, Gousselerbierg, Mersch, Roost, Colmar-Berg, Schieren, Howald, Cents, Richard Serra, Kirchberg, Saint-Esprit, Pénétrante Sud, Merl, Pétange-Église, Biff, secondary access (Accès secondaire) to Esch-Belval, Micheville, Aessen, Ehlerange, Foetz, Frisange, Mondorf and Markusberg.

The planned dates of the interventions for the various tunnels can be consulted online at