San Bernardino Tunnel
San Bernardino | |
End | Hinterrhein |
---|---|
Operation | |
Opened | 1967 |
Character | road |
Technical | |
Length | 6,596 metres (21,640 ft) |
No. of lanes | 2 |
The San Bernardino road tunnel is a road
The San Bernardino Tunnel is part of the A13 as a single-carriageway freeway and therefore passes through one bore without a central physical structure. As there is only one lane per direction, overtaking (passing other vehicles) inside the tunnel is not permitted. The speed limit of 80 km/h (50 mph) is enforced by means of speed-check cameras. This road tunnel is considerably less prone to traffic jams than the St. Gotthard Tunnel.[citation needed]
The old name Vogelberg may refer to the
History
In 1967, the 6.6-kilometre (4.1 mi) long San Bernardino Tunnel was opened as part of the
- lowering the bottom of the centre channel;
- renovation of the drainage system (separate system) and the line channels;
- renewal of electromechanical equipment;
- operational and fire ventilation adapted to contemporary needs;
- creating an emergency escape tunnel;
- demolition and reconstruction of the roadway construction;
- renewal of cladding panels;
- repair, while maintaining the traffic flow.
The total construction costs amounted to approximately
The Mont Blanc tunnel fire between France and Italy in 1999 triggered a general safety review of road tunnels in several countries, including Switzerland. In September 2007, the San Bernardino Tunnel saw the completion of a major safety upgrade. Lighting has been increased and becomes more evenly diffused, with a corresponding improvement in visibility. Particular care has been taken with the visibility of access points to the reworked escape tunnel, minimizing the risk of escape routes becoming obscured by smoke in the event of a major conflagration.[citation needed]
References
- ^ "San Bernardino Tunnel (Grisons, 1967)". structurae.net. Retrieved 2014-07-21.
External links
- Media related to San Bernardino Tunnel at Wikimedia Commons