Bridges, Road Bridges

Second Hooghly River Bridge

© Roland Halbe

The bridge is the result of an intense, but rewarding, planning and construction process that continued for over 20 years. Back then, with a span of 457 metres, it was the largest cable-stayed bridge in Asia, designed and constructed in such a way that indigenous construction companies were able to build it relying exclusively on local labor materials. In order to enable the section-by-section assembly of the grid during cantilever erection using simple riveted joints, a simple plain steel grid with composite concrete slab was developed. The grid consists of simple open I-beams, two longitudinal beams at the edges suspended directly from cables and a load-distributing central longitudinal beam, as well as cross-girders at intervals of 4.1 m. The grid serves as the “permanet falsework” and stiffening for the subsequently manufactured 35-m-wide in-situ concrete slab that cantilevers at both sides.

Categories
Bridges, Road Bridges
Location
Kolkata, India
Architect
schlaich bergermann partner
Cooperation
Freeman, Fox and Partners, London; Leonhardt und Andrä, Stuttgart
Owner
State of West Bengal; Hooghly River Bridge Commissioners, Calcutta
Partner
Jörg Schlaich, Rudolf Bergermann

Technical Data

Total length
822 m
Spans
182 - 457 - 182 m
Height of pylons
122 m
Deck width
35 m
Thickness of concrete slab
23 cm (cast-in-situ)
Cables
parallel wire cables of 7 mm diameter, system BBRV
Lanes for each direction
3-lane carriageway and 1 footway

Location

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