Home » Contract awarded for world’s longest and deepest underwater road tunnel

Contract awarded for world’s longest and deepest underwater road tunnel

by Liam Turner
an underwater road tunnel

A contract has been awarded for the part-construction of what is set to be the world’s longest and deepest underwater road tunnel.

Hæhre and Risa successfully bid for the NOK622m (c.£51m) contract for the Kvitsøy stretch of the E15, which forms part of the larger E39.

The core contract is for the construction of a 3,480m-long single-lane tunnel from Kvitsøy to the main section of the record-breaking Rogfast tunnel.

The tunnel will slope down at a 7% angle.

Hæhre and Risa have also been contracted for the construction of roads, sea embankments, and three bridges.

Hæhre will carry out the tunnel work and bridge construction, while Risa will carry out mass transport and landfill work.

When the project is completed, the main tunnel of the Rogfast project will be 26.7km long.

The project will replace current ferry routes and is set to reduce travel times between Stavanger and Bergen by 40 minutes.

The project is due to begin this September.

Image: Ricardo Gomez Angel/Unsplash

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