The Third Karnaphuli Bridge is the first major cable-supported crossing to be constructed in Bangladesh. It spans the Karnaphuli River immediately to the north of Chittagong port. The bridge is located at Chittagong‑ Cox’s Bazar Road (N1) of Bangladesh on “Design & Build” basis (JV with China Major Bridge Engineering Corporation)

The main bridge includes three 200 m long main river spans with an extra dosedprestressed concrete single cell box girder deck constructed by the balanced cantilever method.

The bridge is founded on alluvial soil affected by deep soil liquefaction and river scour. The foundations of the main bridge incorporate 3 m diameter bored cast in situ piles which were base grouted post-construction.

During the Year : 2005-2006

Salient Features :

  • Type of Bridge: Extra dozed PC box girder
  • Bridge length: 950 metre
  • Bridge Width : 24.47m
  • Maximum Span Length:200 metre
  • River training work: 260m

Foundation – Pile foundation

Total Nos. of pile/ well-56 Nos.

Sub-Structure – RCC

Superstructure – Pre-stressed  & Extra dozed

Concrete Girder & RCC slab

Piling work

(i) Cast-in-situ piling (1.50m dia 40 Nos. and 3.00m dia 16 nos.)

ii) Total Nos. of Pile – 56

Client Name : Roads & Highways Department ,Ministry of Communication, Government of Bangladesh.

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