International Bridge Technologies

Second Vivekananda Bridge – Kolkata, India

Technical details
Client
National Highway Authority of India (NHAI)
Dates

Construction Completed: 2007

Location
Kolkata, India
Partners
Developer: Second Vivekananda Bridge Tollway Co., Contractor: Larsen and Toubro, General Consultant: Consulting Engineering Services and Parsons Brinckerhoff Asia
Activity
SYSTRA IBT’s Role: Bridge Design Consultant

DESIGN-BUILD

Main Span: 110 m (360 ft)
Total Length: 880 m (2,887 ft) (main bridge)
Width: 29 m (95 ft)

The 29 m (95 ft) wide structure includes seven 110 m (360 ft) spans and consists of an “extradosed” precast segmental concrete box girder built in balanced cantilever, with three mid-span expansion joints. These joints are designed to allow for horizontal movement but resist bending due to concrete creep distribution and live loads.

The deck is supported by a central plane of stay cables. The superstructure is monolithically connected to cast-in-place pier shafts supported on 45 m (148 ft) deep well foundations. The circular caisson caps are located at riverbed level to reduce the risk of scour.

Construction of the bridge superstructure was critical due to high current and flooding after the monsoon season. The precast segments were delivered with barges and lifted in place with a beam and winch system at the cantilever tip.

SYSTRA IBT is responsible for the preliminary design for approach spans and main bridge, detailed design for main bridge superstructure, construction engineering for main bridge. Bearing inspection/external cable replacement/stay forces measurement/as-built geometry review/bridge structural assessment for revised IRC.

Additional Awards:

  • 2008 CELSOC – Engineering Excellence Merit Award
  • 2008 CELSOC – Engineering Excellence Small Firm Honor Award

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