New Tyne Crossing

t125-tyne-tunnel
Newcastle, United Kingdom
HEIGHT: 8.535 m
WIDTH: 14.960 m
TOTAL IMMERSED LENGTH: 360 meter
DEPTH AT BOTTOM OF STRUCTURE: 26.9 m
ENVIRONMENTAL CONDITIONS:
Extreme river conditions: difference between MHWS and MLWS is 4.3 m
Dredging only allowed from November to March due to fishery and water environment
regulations.
FABRICATION METHOD:
Elements constructed in refurbished ship dry dock on the
north bank.
t124
Tyne and Wear Passenger Transport Authority
Main contractor: Bouygues TP; subcontractor for immersed tunnel: VSM (Volker Stevin Construction Europe B.V., Volker Stevin UK Ltd, BAM Civiel B.V.)
High Point Rendell
90m
360m
26.9m
2010-05-01
4
One wide tube for 2 lanes in one direction plus one narrow tube for escape passage and cable duct.
8.535m
14.960m
Asymmetric tunnel cross section requires the use of transversal trim ballast.
Shallow dock requires limited thicknesses for walls and slabs and reduces opportunities for
float-out of tunnel elements.
Elements constructed in refurbished ship dry dock on the
north bank.
At parking place next to trench.
Extreme river conditions: difference between MHWS and MLWS is 4.3 m
Dredging only allowed from November to March due to fishery and water environment
regulations.
Immersed from catamaran (pontoons with transverse beams) and crane barge.
Vertical positioning and temporary foundation by jacks and pins.
Rubber seal type Gina and
omega seal.
Watertight concrete. Cooling is used to prevent thermal cracking during hardening of the
concrete.
Sand-flow method.
1 m thick rock armour protection
Strength class C32/40
At least 1.06 in permanent situation.