The Lopper Road Tunnel is a

tunnel A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube cons ...

in central Switzerland. The tunnel connects Hergiswil in the

canton of Nidwalden Nidwalden, also Nidwald (german: Kanton Nidwalden, ; rm, Chantun Sutsilvania; french: Canton de Nidwald; it, Canton Nidvaldo) is one of the 26 cantons forming the Swiss Confederation. It is composed of eleven municipalities and the seat of the ...

with

Alpnach Alpnach is a village in the canton of Obwalden in Switzerland. It comprises the villages of Alpnach Dorf, Alpnachstad and Schoried. History Alpnach is first mentioned about 870 as ''Alpenacho''. Geography Alpnach has an area, , of . Of this ar ...

in the

canton of Obwalden Obwalden, also Obwald (german: Kanton Obwalden, rm, Chantun Sursilvania; french: Canton d'Obwald; it, Canton Obvaldo), is one of the 26 cantons forming the Swiss Confederation. It is composed of seven municipalities and the seat of the gover ...

, and forms part of the A8 motorway. The tunnel was opened in 1984, and is long. The tunnel has two lanes (one in each direction), and there is no

central reservation The median strip, central reservation, roadway median, or traffic median is the reserved area that separates opposing lanes of traffic on divided roadways such as divided highways, dual carriageways, freeways, and motorways. The term also ...

. The tunnel runs under the Lopper, a shoulder of

Mount Pilatus Pilatus, also often referred to as Mount Pilatus, is a mountain massif overlooking Lucerne in Central Switzerland. It is composed of several peaks, of which the highest () is named ''Tomlishorn''. Geography and transport The whole mountain ...

which extends into

Lake Lucerne __NOTOC__ Lake Lucerne (german: Vierwaldstättersee, literally "Lake of the four forested settlements" (in English usually translated as ''forest cantons''), french: lac des Quatre-Cantons, it, lago dei Quattro Cantoni) is a lake in central ...

. The northern portal of the Lopper Tunnel is near to that of the Kirchenwald Tunnel on the

A2 motorway This is a list of roads designated A2. Roads entries are sorted alphabetically by country. * A2 motorway (Albania), a road connecting Vlore with Fier * A002 road (Argentina), a road connecting Avenida General Paz and Ministro Pistarini Internat ...

, and most of the junction between the two motorways lies to the north of their respective portals. However the link for westbound traffic from the A2 to the A8 utilises a long single-lane link tunnel within the mountain between the two main motorway tunnels. The Lopper I railway tunnel, on the

Zentralbahn The Zentralbahn is a Swiss railway company that owns and operates two connecting railway lines in Central Switzerland and the Bernese Oberland. It was created on January 1, 2005, with the acquisition of the independently owned Luzern–Stans� ...

Brünig line, parallels the Lopper road tunnel. The Lopper II railway tunnel, on the Zentralbahn Luzern–Stans–Engelberg line, parallels the Kirchenwald road tunnel.

References

Buildings and structures in Nidwalden Buildings and structures in Obwalden Transport in Nidwalden Transport in Obwalden Road tunnels in Switzerland {{Switzerland-struct-stub