Maas Tunnel

t9-maastunnel
(under Nieuwe Maas-River)Rotterdam, Netherlands
TOTAL IMMERSED LENGTH: 584 m
DEPTH AT BOTTOM OF STRUCTURE: 22.5 m
HEIGHT: 8.39 m
WIDTH: 24.77 m
FABRICATION METHOD: Existing dock in Heyse Harbor. Roof slab was left off until the element was floating in Waal Harbor. Three cycles of three elements were used.
SITE CONDITIONS: river
t9
Gemeente Rotterdam (Municipality of Rotterdam)
N.V. Maastunnel, a joint venture consisting of: Christiani & Nielsen N.V. of the Hague, N.V. Internationale Gewapend Beton Bouw (now member of Royal Bos Kalis Westminster Group), N.V. Nederlandsche Aanneming Mij (now member of Ballast-Nedam Group), M.J. H
Christiani & Nielsen A/S, Copenhagen
61.35m
584m
22.5m
1943-04-01
9
Four lanes in two tubes for vehicles. One tube for cyclists and one tube for pedestrians
8.39m
24.77m
Immersed tunnel terminated in ventilation buildings constructed as pneumatic caissons.
Construction spanned the occupation of Holland during Second World War
Existing dock in Heyse Harbor. Roof slab was left off until the element was floating in
Waal Harbor. Three cycles of three elements were used.
Lowering by means of floating cranes. Pontoons along the sides of the elements were
used to provide positive buoyancy
6 mm steel membrane covered with coating of concrete to inhibit rusting.
Sandjetted foundation. Very first application of Christiani & Nielsen method