Thursday, September 9, 2010

Jamuna Bridge-Explore the Natural, Historical and Cultural Attractions of Bangladesh

Jamuna Bridge
The Jamuna Bridge is currently the 12th longest bridge in the world, according to available information, and provides the first fixed crossing of the Jamuna River linking eastern and northwestern parts of Bangladesh. The location of the bridge is shown on the map alongside. It crosses the Jamuna River (the main channel of the Brahmaputra River in Bangladesh) from Bhuapur on the East Bank to Sirajganj on the West.

The main bridge is 4.8 km long with 47 main spans of approximately 100 metres and 2 end spans of approximately 65 metres. Connected to the bridge are East and West Approach Viaducts each with 12 spans of 10 metre length and transition spans of 8 metres. The total width of the bridge deck is 18.5 metres.

The crossing has been designed to carry a dual two-lane carriageway, a dual gauge (broad and metre) railway, a high voltage (230 kV) electrical inter-connector, telecommunication cables and a 750 mm diameter high pressure natural gas pipeline. The carriageways are 6.315 metres wide separated by a 0.57 metre width central barrier; the rail track is located along the north side of the deck. On the main bridge, electrical inter-connector pylons are positioned on brackets cantilevered from the north side of the deck. Telecommunication ducts run through the box girder deck and the gas pipeline is located under the south cantilever of the box section.

The bridge has been built by Hyundai Engineering and Construction (Korea) as a 'design and build' contract. TY Lin Assoc. of San Francisco carried out the design as a sub-contractor for Hyundai. The Approach Roads were constructed by Samwhan
Corporation (KOREA).
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