Flekkerøy Tunnel
The Flekkerøy Tunnel (Norwegian: Flekkerøytunnelen) is a subsea road tunnel on the county road 457 in the municipality of Kristiansand in Agder county, Norway. It is the southernmost subsea tunnel in Norway. The tunnel runs under the strait between Kroodden on the mainland and the island of Flekkerøya. The tunnel is 2,321-metre (7,615 ft) long, it reaches a depth of 101 metres (331 ft) below sea level, and the maximum gradient is 10%. Construction started on the Flekkerøy tunnel on 1 August 1988. The breakthrough in the tunnel was on 6 March 1989 and the tunnel was opened on 15 August 1989. It replaced a ferry connection between Møvik in mainland Kristiansand and Lindebøkilen on the island of Flekkerøy.
The tunnel outlet on Flekkerøya | |
| Overview | |
|---|---|
| Official name | Flekkerøytunnelen |
| Location | Agder, Norway |
| Coordinates | 58.0948°N 07.9725°E |
| Route | Fv457 |
| Start | Kroodden |
| End | Flekkerøya |
| Operation | |
| Opened | 1989 |
| Operator | Statens vegvesen |
| Technical | |
| Length | 2,321 m (1.44 mi) |
| No. of lanes | 2 |
| Operating speed | 70 km/h (43 mph) |
| Lowest elevation | 101 m (331 ft) below sea level |
| Grade | 10% |
Construction costs were 87 million kr. Tolls were collected from the opening in 1989 until 14 July 1998. Fire safety in the tunnel is considered to be good.