Knappe Tunnel

Knappe Tunnel
Overview

Location	Bergen, Norway
Coordinates	60°19′13″N 005°16′10″E / 60.32028°N 5.26944°E / 60.32028; 5.26944Coordinates: 60°19′13″N 005°16′10″E / 60.32028°N 5.26944°E / 60.32028; 5.26944
Status	In use
Route	557
Start	Dolvik
End	Liavatnet
Operation
Work begun	2006
Opened	10 September 2010
Operator	Statens vegvesen
Technical
Length	2.6 km (1.6 mi)
Number of lanes	4
Lowest elevation	−29 metres (−95 ft)

The Knappe Tunnel (Norwegian: Knappetunnelen) is a four-lane, twin-tube motorway tunnel under construction in the city-municipality of Bergen in Hordaland county, Norway. The tunnel is part of County Road 557 and consists of the first and second stages of the four-lane motorway project called "Ring Road West". The southern part of the tunnel goes under the Nordåsstraumen, a small strait connecting the lake Nordåsvatnet and the Grimstadfjorden.

The tunnel was built in two stages. The first stage, from Dolvik in Søreidgrenda to Sandeide (with a branch heading east to Straume), started in August 2006 and was opened to the public on 10 September 2010. Stage 2 will run from Sandeide to the southern tip of the lake Liavatnet, where it will intersect with National Road 555. There are two extra exits/entrances to the tunnel (other than the two endpoints of the tunnel). There is a branch that heads east off the main path of the tunnel to connect to the village of Straume, and another branch that connects to the village of Sandeidet/Varden.

The first part of the tunnel is 2.6 kilometers (1.6 mi) long, and the second segment is 2.8 kilometres (1.7 mi) long. The second segment is scheduled for completion in 2015. In total, the entire tunnel will be about 5.4 kilometres (3.4 mi) long. The lowest point of the tunnel is under the Nordåsstraumen strait, reaching 29 metres (95 ft) below sea level.^[1]

References

↑ "Prosjektbeskrivelse" (in Norwegian). Norwegian Public Roads Administration. Retrieved 12 September 2011.

Subsea tunnels in Norway

Current	Atlantic Ocean Bjorøy Bjørvika Byfjord Bømlafjord Eiksund Ellingsøy Fannefjord Finnøy Flekkerøy Freifjord Frøya Godøy Halsnøy Hitra Hvaler Ibestad Karmøy Knappe Kvalsund Mastrafjord Maursund Melkøysund North Cape Oslofjord Skansen Skatestraum Rya Sløverfjord Tromsøysund Valderøy Vardø

Under construction	Hundvåg Ryfylke

Proposed	Bjarkøy Cross Link Hordaland Fixed Link Langfjord Moss–Horten Møre Fixed Link Rogaland Fixed Link Sotra Sundsøy Trondheimsfjord

Road tunnels in Hordaland county, Norway

Current	Arnanipa Austmannali Bjorøy Bømlafjord Dalseid Damsgård Eidfjord Eidsvåg Eikefet Fjæra Fløyfjell Folgefonna Halsnøy Haukeli Horda Hyving Jernfjell Jondal Knappe Kvernhushaug Løvstakken Markhus Masfjord Måbø Nipe Olsvik Risnes Rullestad Røldal Seljestad Sivle Stalheim Stavenes Stongafjell Storegjel Svandalsflona Trengereid Trollkone Tunsberg Vallavik Åkrafjord

Under Construction	Eikås Nyborg

Proposed	Arna Cross Link Fedjefast Hordfast Korsfjord Skansen

Closed	Old Dyrskar

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