Kerenzerberg Road Tunnel

The Kerenzerberg Tunnel is a motorway tunnel in Switzerland, and forms part of the A3 motorway from Basel and Zürich to Sargans. The tunnel is 5,760 metres (18,900 ft) long and lies south-west of Lake Walen, under the Kerenzerberg Pass.^[1]

Kerenzerberg Road Tunnel

Overview
Location	Canton Glarus, Switzerland
Coordinates	47°07′30″N 9°06′59″E
Status	Active
Route	A3 motorway
Operation
Character	road
Technical
Length	5,760 metres (18,900 ft)
No. of lanes	2

The Kerenzerberg Tunnel is a one-way, unidirectional tunnel. Traffic from Zürich to Sargans must pass through the tunnel, whilst traffic in the opposite direction runs along the shores of the Walensee through six short tunnels originally built for a railway. The railway now runs through the 4 km (2.5 mi) long Kerenzerberg Rail Tunnel, which is roughly parallel to the road tunnel.^{[citation needed]}

Transportation of dangerous goods through the Kerenzerberg tunnel is prohibited.^{[citation needed]}