Bastia Old Harbour Tunnel
HEIGHT: 7.58 + 0.7 m
WIDTH: 14.10 m
TOTAL IMMERSED LENGTH: 249.72
DEPTH AT BOTTOM OF STRUCTURE: 13.5 m
ENVIRONMENTAL CONDITIONS: Tunnel crosses a harbor. Half the tunnel trench was in rock, the other in sand and gravel.
FABRICATION METHOD: Tunnel elements built in approach ramps. Permanent longitudinal prestressing.
WIDTH: 14.10 m
TOTAL IMMERSED LENGTH: 249.72
DEPTH AT BOTTOM OF STRUCTURE: 13.5 m
ENVIRONMENTAL CONDITIONS: Tunnel crosses a harbor. Half the tunnel trench was in rock, the other in sand and gravel.
FABRICATION METHOD: Tunnel elements built in approach ramps. Permanent longitudinal prestressing.
Bastia, Corsica,
France
Direction départementale de l’équipement de Haute-Corse
GTM France with Corse Traveaux y Ph. Agostini
GTMBTP, Marseille
62.33m
249.72m
13.5m
Project construction
1983-04-30
4
One tube; two lanes, plus shoulders
7.58m
14.10m
The graving dock used a floating door. The final joint was made between the last
element and a fixed cut-and-cover section in the space formerly used as a dock.
element and a fixed cut-and-cover section in the space formerly used as a dock.
Tunnel elements built in approach ramps. Permanent
longitudinal prestressing.
longitudinal prestressing.
Tunnel crosses a harbor. Half the tunnel trench was in rock, the other in sand and
gravel.
gravel.
By means of floating cranes and four vertical cylindrical tanks mounted on tunnel roof.
Gina and Omega rubber seals
On first tunnel element a thin PVC film; on remaining three tunnel elements no
waterproofing.
waterproofing.
The elements were enclosed on the sides and tremie concrete was placed for the
permanent foundation.
permanent foundation.