A355 autoroute

The A355 autoroute, known as the "grand western bypass" or "western bypass of Strasbourg" (GCO), is a motorway that bypasses Strasbourg from the west through the Kochersberg. With a length of 24 km, it connects the junction between the A4 and A35 motorways to the north of Strasbourg to the junction between the A35 and the A352 to the south.^[1]

A355 autoroute
Grand Western Bypass of Strasbourg
The A355 motorway in Kolbsheim
Route information
Length	24 km (15 mi)
Existed	December 17, 2021 (2021-12-17)–present
Major junctions
South end	A 35 and A 352 to Duttlenheim
Major intersections	D 1004 to Ittenheim
North end	A 4 and A 35 to Vendenheim
Location
Country	France
Regions	Grand Est
Departments	Bas-Rhin (Collectivité européenne d'Alsace)
Major cities	Strasbourg
Highway system
Roads in France Autoroutes Routes nationales