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The Runyang Bridge or Rùnyáng Chángjiāng Dàqiáo crosses the Yangtze River in Jiangsu Province, China. 

The bridge consist of two major bridges that link Tangzhou on the north of the river and Zhenjiang on the South.  The bridge is part of the Beijing-Shanghai Expressway. 

The south bridge is a suspension bridge with a span of 4888 ft it is the 3rd longest suspension bridge in the world, and the longest in China up untill 2007 when the Xihoumen Bridge was opened and made it the 2nd longest in china and 4th in the world. 

The main span of the bridge consists of a streamlined orthotropic steel box girder that is 3 metres (10 ft) in depth. The width of the deck is 39.2 metres (129 ft), accommodating 6 traffic lanes and a narrow walkway at each outside edge for maintenance. The height clearance for river navigation is about 50 metres (164 ft).

The north bridge is a cable-stayed bridge with a span of 1332 ft with towers 492 ft abover water level.  In the middle of the two bridges is the island of Sivezhou.  The length of the bridge is 22.16 miles.  The construction of the bridge started in October 2000 and was opened to the public on April 30th, 2005 , it was opened ahead of schedule

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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

 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.

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

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

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

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