This is the first in our bridge series although a bridge is not the first thing you think of when you talk about Steel Buildings it is one of the first things you think about when you talk about Steel Structures, and although most bridges are not made mostly of steel, they almost all use a significant amount of steel, either as cables or more commonly steel used in reinforcing concrete ,with out the Steel most large structures today could not be possible, so lets start the Bridge Series with the Bang Na Expressway

Burapha Withi Expressway Bang Na Expressway

 The Bang Na Expressway is a huge Conrete and Steel Bridge that streches 33.51 Miles to make it the longest Bridge in the world as of this posting.

Bangna Bangpakong Road Bang Na Expressway

The Bang Na Expressway is also known as the Burapha Withi Expressway  this Bridge is located in Bankok , Thailand.

bang na expressway Bang Na Expressway

Althought we don’t have the exact amount of steel used on this job we do have some other info for you and pictures.

Structure Elements

Foundation of main line

Main Column

Portal Frame

D2/D3 and D6

FOUNDATION OF MAIN LINE

  1. SPUN PILE,
  2. Dia800 mm (31.5″)
  3. 120 mm wall thickness
  4. wo sections welded
  5. 16 piles per pier
  6. PILE CAP,
  7. 2.5 m(8.2″) thickness
  8. Below the flow line

MAIN COLUMN

H – Shape, slender light appearance

Average height of 16 m (52.5’)

Cast-in-place

Burapha Withi Expressway portal frame Bang Na Expressway

PORTAL FRAME

  1. Toll plazas, merging areas of the ramps
  2. Portal Frame with D2/D3 and D6 segments

PORTAL ERECTION TRUSS

  1. Two components connected by a turntable
  2. Launching girder with two main spans long
  3. Erection girder with two portal spans long

bang na expressway h shaped dimensions Bang Na Expressway

bang na expressway under construction Bang Na Expressway

bang na expressway under construction2 Bang Na Expressway

bang na expressway under construction3 Bang Na Expressway

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  • LAUNCHING GIRDER