AEC
  • Bridges

Project Detail

THE INDUSTRIAL RING ROAD PROJECT

Historical

 

By royal foresight and with the mercy of His Majesty King Bhumibol towards Thai people to mitigate suffering from traffic congestion, His Majesty the King has given a solution for alleviating traffic problems caused by heavy trucks.  His Majesty the King has suggested that the Industrial Ring Road as a link between the industrial areas in Samut Prakarn Province located on both side of Chao Phraya River and the Bangkok Port at Khlong Toei should be built so that heavy trucks do not enter into the town and cause traffic problem.

 

His Majesty the King presided over the ground breaking ceremony at Rama III road on May 29, 2000.

 

The project construction is partly financed by the government budget in the amount of Million Baht 3,600 and the rest by the loan from the Japan Bank for International Cooperation (JBIC) in the amount of Million Yen 14,887.

 

The land acquisitions were carried out during years 2001-2002.  The constructions were substantially completed in August 2006. 

 

The walkathon ceremony on the bridges for the celebration of 60th Anniversary His Majesty King Bhumibol Adulyadej’s Accession to the Throne, presided over by HRH Princess Ubolrat, was convened on September 9, 2006.

 

The Industrial Ring Road was opened to traffic on September 20, 2006.

 

Project Highlight

 

The Industrial Ring Road Project consists of two stay bridges continuously crossing the Chao Phraya River on the north at Rama III Road and on the south at the end of Pu Chao Saming Phrai Road. 

 

At the central area between these two bridges, there is an interchange at high level
45 meters above ground.  This interchange is distributing traffic into three directions.

 

The bridges have seven traffic lanes to provide one special lane for heavy trucks as a climbing lane.  With this reason, there are four traffic lanes on the way up and three lanes on the way down.

 

The bridge crossing Chao Phraya River at the south is at the height of about 58 meters to provide navigational clearance for ships passing to and from the Bangkok Port.

 

The high pylons of the bridges are designed as diamond shape with the pinnacle representing Thai symbol as inspired by the crest of pagoda or coronet.  This symbol is considered as diamonds given to Thai people by the royal kindness of His Majesty the King.

 

The area under the Central Interchange in Bang Kra Jaow which is located between the south and the north bridges crossing Chao Phraya River is developed as a public park with recreation area and museum.

 

Major Structures

 

Main Bridges Crossing Chao Phraya River:

  • A Crossing of the Chao Phraya River in the form of major level cable stayed bridges with two high pylons.  The South Bridge provides seven traffic lanes and has main span of 398 m. and 152 m. back spans each on two piers.  The North Bridge provides seven traffic lanes and has main span of 326 m. and 128 m. back spans each on two piers.  The pylons are of reinforced and post-tensioned concrete construction.  The main span is of steel concrete composite structure.  The back spans are of post-tensioned concrete construction.
  • A high level, six-lane viaduct of post-tensioned concrete construction connecting the North Bridge to  the South Bridge with a total length of 313 m.

Approach Bridges

  • A high level approach bridge of post-tensioned concrete construction designed as cast-in-place prestressed concrete box construction.  South approach from Pu Chao Saming Phrai Road is seven-lane viaduct with a total length of 1,090 m.   North Approach from Rama III Road is seven-lane viaduct with a total length of 1,455 m.  West Approach from Suksawat Road is five-lane viaduct with a total length of 1,372 m.

 

Interchanges

  • A high level interchange at central area comprises of two-lane viaduct of cast-in-place prestressed concrete box construction with a total length of 1,659 m.
  • A two-lane interchange at Suksawat Road designed as cast-in-place prestressed concrete box construction with a total length of 1,446 m.
  • A two-lane interchange at Pu Chao Saming Phrai Road designed as cast-in-place prestressed concrete box construction with a total length of 976 m.