Upgrading and Widening of Keppel Viaduct, Singapore

Keppel Viaduct is part of the Ayer Rajah Expressway (AYE) which spans 2.2km and is one of the most heavily trafficked expressways in Singapore. The project comprised of the widening of the viaduct from dual 3-lane to dual 4-lane carriageway.

Bridge expansion joints

Image above of operatives installing Britflex BEJ at Keppel Road Viaduct.

Britflex BEJ expansion joint system was selected by Singapore Piling on behalf of Land Transport Authority (Singapore) to be installed at Keppel Viaduct. There were 35 new Britflex BEJ expansion joints used to replace existing joints. Britflex BEJ is registered with the UK Highways Agency for use on highway bridge decks on all classes of roads and motorways. It is a surface mounted mechanical system, with an elastomeric insert between two metal runners/carrier rails. Set into a rapid curing resin compound known as Britflex Cold Cure Resin (Tropical) Mortar, designed as a cold curing system which accelerates the rate of cure and accommodates early trafficking (within 2 hours). The polyureide resin provides unrivalled anchorage to the deck due to its remarkable bonding qualities.

Britflex BEJ system offers the following advantages:

  • Excellent bond strength not just with concrete but also with asphalt and the steel rail
  • Rapid on site assembly
  • Minimal disruption to traffic
  • Low future maintenance costs
  • Hard wearing with in built flexibility

Given the tight schedule and short lane closure duration available, Britflex Cold Cure (Tropical) has once again proven itself as the ideal solution to such challenging works.

Bridge Expansion joints

Image above of operatives setting Britflex BEJ carrier rails.

The improvement works have increased the capacity of the viaduct which will enable smoother traffic flow, to cater for new developments in the areas nearby. Project ran from September 2013 to April 2016 and was fully endorsed by the client.

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