The Cholfirst Tunnel is a tunnel in Switzerland. The tunnel lies in the northern canton of Zuerich, and forms part of the Autostrasse A4. It was completed in 1996, and is 1,260 metres (4,130 ft) long.
Map of Cholfirsttunnel, 8247 Flurlingen, Switzerland
The tunnel has three lanes (two heading for Zurich, and one heading for Schaffhausen). There is no central reservation.
References
Cholfirst Tunnel Wikipedia(Text) CC BY-SA