Client

Land Transport Authority

Project Completion

Jun 2011

ER233 – Upgrading of West Coast Highway / Clementi Road Junction

To improve the traffic flow, a two-lane dual-carriageway vehicular flyover was constructed across the junction of West Coast Highway and Clementi Road. 4 numbers of precast U-girders, 35 m in length by 2 m in width by 2 m in depth each, were launched for the span across the junction. The entire flyover is sitting on 50 numbers of bored piles, ranging from 0.9 m to 1.5 m.

Besides, 2 numbers of pedestrian overhead bridges (POB) with barrier-free ramps were erected across West Coast Highway. For each POB, 1 prestressed precast (PSPC) beam with a dimension of 40 m in length by 2.4 m in width by 1.6 m in depth was launched.

Further down at the intersection between West Coast Highway and Jalan Buroh, the existing heavy-traffic roundabout was reconstructed. Semi-rigid pavement system was adopted to improve the durability of carriageway and to reduce the turnaround time for lane closure so as to minimize disruptions to road users.

Special Feature

  • The spanning distance of the heavily-loaded vehicular flyover across the junction is 70 m as compared to the typical distance of 40 m.
  • Special grouting technique was deployed to fill up the cavities between the bored piles and geological strata, comprising limestone.
2C-Photo-Gallery LTA ER233 - Upgrading of West Coast Highway

Bored piling works for the construction of flyover across the junction of West Coast Highway and Clementi Road

2D-Photo-Gallery LTA ER233 - Upgrading of West Coast Highway

Construction of flyover crosshead with post-tensioning upon the completion of bored piles, pile caps and pier column

2E-Photo-Gallery LTA ER233 - Upgrading of West Coast Highway

Construction of flyover cantilever box girder with post-tensioning for the launching of precast U-girders

2F-Photo-Gallery LTA ER233 - Upgrading of West Coast Highway

Construction of flyover box girder deck slab spanning between two crossheads

2G-Photo-Gallery LTA ER233 - Upgrading of West Coast Highway

Launching of PSPC beam for the construction of POB across West Coast Highway

2H-Photo-Gallery LTA ER233 - Upgrading of West Coast Highway

Construction of staircase and ramp for POB across West Coast Highway

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