Giswil bypass tunnel
The Giswil bypass tunnel relieves the town of Giswil in the Swiss canton of Obwalden from through traffic on the A8 motorway .
facts and figures
- Construction period: 1997 to 2004
- Opening: 2004
- Length: 2,066 m
- Construction costs: CHF 133 million
- Vehicles per day: unknown
- Coordinates Südportal: 656881 / 186376
- Coordinates north: 657901 / one hundred eighty-eight thousand one hundred and twenty-four
situation
In the tunnel there is oncoming traffic at a speed of 80 km / h. The tunnel has a very high safety standard. A safety tunnel running parallel on the mountain side at a distance of 20 m enables escape in the event of an incident. It is connected to the road tunnel by cross passages every 300 m. In addition to the complete video surveillance, the banquet lighting with white LEDs, a double security line with additional reflectors, two large emergency niches, individually controllable fire flaps for targeted ventilation, fire alarm cables, fixed hydrants (every 150 m), electronically controllable traffic signals, fire emergency lights and a new, light special color on the tunnel walls to give a light, friendly impression.
Map with all coordinates: 