Sleeper Replacement on the North-South East-West Lines

Improving the North-South and East-West Lines

SMRT is making good progress in its multi-year, multi-project efforts to renew the NSEWL. This marks the biggest transformation of the Lines since they were built in the 1980s.

Sleeper Replacement

Working closely with the Land Transport Authority (LTA) and rail contractors, the SMRT team achieved a major milestone when we finished replacing wooden sleepers on the North-South Line (NSL) with concrete sleepers in April 2015.

The NSEWL were built with wooden sleepers. These sleepers support the rails on which our trains run. Some 188,000 sleepers are nearing the end of their 25-year lifespan. Exposure to the sun and rain over the years, vibration from moving trains and the
weight each sleeper has to bear when a train passes over it add to the wear and tear.

SMRT Sleeper Replacement

Road-Rail Vehicles (RRVs) are employed to replace wooden sleepers with new concrete sleepers.

By renewing wooden sleepers with concrete sleepers that have a 50-year lifespan, journeys on the NSEWL will be safer and smoother for decades to come. Positive results from the sleeper replacement are already felt on the NSL. With speed restrictions lifted along major portions of the NSL, passengers arrive at their destination faster. Journey times on the NSL have been reduced by around 10 per cent after the speed restrictions were fully lifted in May 2015.

Wooden sleepers along the East-West Line (EWL) are now being replaced nightly. Steady progress is being made thanks to the experience gained by our engineers while carrying out the NSL sleeper replacement project. When the work is completed by the end of 2016, passengers travelling from Pasir Ris to Joo Koon on the EWL will also experience better train rides.

The projected timelines for SMRT's multiyear multiproject renewal efforts

The projected timelines for SMRT’s multiyear multiproject renewal efforts

Click here to view an article by Channel NewsAsia on Sleeper Replacement (While you were sleeping, 500 workers toiled to replace MRT rail sleepers, Channel NewsAsia, 13 Nov).

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