Tunnel

The Tingstad Tunnel under the Göta älv river consists of two sections, each with three lanes, connecting Hisingen with mainland Gothenburg. The traffic is heavy, with up to 3,500 vehicles an hour in each direction.

The asphalt on the M25 Dartford crossing's western tunnel under the trucks is pounded 24 hours a day, seven days a week, and the carriageway's 11 year old surfacing had become heavily wheel tracked and potholed. Resurfacing was required.