This project was for the construction of a flyover above the existing Jalan Tun Razak bridge and roundabout. It connects the busy commercial area at Jalan Sultan Ismail with the housing area of Jalan Kampong Pandan and the scheme objectives were to improve traffic circulation and access to the roundabout.

 

At the same time, there were two other projects in progress – the SMART tunnel and KL-Putrajaya Highway Ramps. The original method of construction was detailed as precast segmental construction span-by-span, using an expensive overhead launching gantry. If the handing over of a pier were to be delayed due to other contractors, the launching gantry could not advance forward.

By adopting an alternative design, based on balanced cantilever construction using form travelers, the sequence of construction could be changed according to availability of piers – giving the advantage of both flexibility and economics. BBR Malaysia, through the use of form travelers and prestressing

technology, combined with CEPAS’ finely-tuned and well-proven design expertise, optimized the design and construction method for the superstructure. The owner’s requirements were to maintain the span lengths, shape and outer dimensions of the bridge superstructure.

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