The Granfoss Tunnel is a set of two tunnels on Ring 3 in

Oslo Oslo ( , , or ; sma, Oslove) is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of in 2022, while the city's greater urban area had a population ...

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the ...

. The two tunnels are long and they are part of the Granfoss Line, a stretch of motorway which was opened in 1992 connecting Ring 3 with the

European route E18 European route E18 runs from Craigavon in Northern Ireland to Saint Petersburg in Russia, passing through Scotland, England, Norway, Sweden and Finland. It is about in length. Although the designation implies the possibility of a through jo ...

. The name comes from the Granfossen waterfall on the

Lysakerelva Lysakerelven (also known as Lysakerelva, en, Lysaker River) is a river in Norway that forms the boundary between the municipalities of the capital city of Oslo and Bærum. The river by this name has its source in Bogstadvannet, though the sourc ...

river, which passes nearby. The two tunnels run from

Lysaker Lysaker is an area in Bærum Municipality, Viken (county), Viken County, Norway. Lysaker is the easternmost part of Bærum and borders Oslo city proper, proper. Lysaker was initially a farming community, later becoming a residential area. Today ...

to Mustad, and from Mustad to Ullern Church, respectively. When the two tunnels with four lanes were opened for traffic, a bottleneck of Oslo's road system which had lingered for several decades was finally dissolved. The tunnels were financed by

Oslo Package 1 Oslo Package 1 ( no, Oslopakke 1) was a political agreement and plan for introducing an toll road, urban toll ring around Oslo, Norway and making 31 investments to road infrastructure in Oslo and Akershus. The package was approved in 1988 and toll ...

. Despite there being two tunnels, the singular name is used in local parlance.

References

* Road tunnels in Oslo Tunnels in Bærum Tunnels completed in 1992 {{Norway-tunnel-stub