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Project Portfolio - Bloukrans Bridge

BRIEF FACTS:

Client: NTC
Location: Garden Route, Eastern Cape, South Africa
Value: R11 million
Partner: Concor
Completion: 1983

OVERVIEW:

The Bloukrans bridge was one of three Garden Route bridges constructed by a consortium of Murray & Roberts and Concor for the NTC for R25 million.

This proved one of the most demanding and technically complex contracts Murray & Roberts had ever worked on - from a design as well as construction point of view. A tremendous amount of work went into the design of the temporary stage structure which was more complex than the permanent stage.

Bloukrans was constructed by the free suspended cantilever system. That is, every fourth segment - each averaging 5.25 metres in length - is tied back by the BBR suspension cables. This is the first time that the BBR system of prestressing was used for this application

At the time of construction, the Bloukrans Bridge was the largest concrete arch bridge in Africa and the fourth largest in the world. The arch alone, has a mass of nearly 12 000 tonnes!

The Bloukrans Bridge was opened on Friday, 10 June 1983, by the Minister of Transport, after being completed five months ahead of schedule by Murray & Roberts and its partner at the time -  Concor. 

ACHIEVEMENTS:

  • The 451m deck at Bloukrans was completed on February 12, three years since the contract was officially started and an incredible 26 weeks ahead of the original schedule
  • The Bloukrans bridge received both the Fulton Award for Excellence in the use of concrete and the SAICE Eastern Cape Branch Award in 1983