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NEW SENTOSA GATEWAY TUNNEL IN THE SENTOSA-HARBOURFRONT AREA

The Sentosa Gateway Tunnel will complement a package of road improvement measures that LTA announced in February 2008 to cater to the traffic volume increase in the Sentosa-HarbourFront area when Resorts World at Sentosa is completed.

With the completion of the Resorts World at Sentosa as well as other future residential and commercial developments in Sentosa Island, traffic volume plying the vicinity is expected to grow by some 20% between 2010 and 2015.

By 2015, the growth in traffic demand in the area would have almost utilised all available capacity for surface roads. Instead of widening the at-grade junctions further, LTA expects the completion of this road tunnel in 2015 to be a more efficient means to cater to the projected increase in traffic demand then. This will lead to a positive travel experience for all going to the Sentosa-HarbourFront area.

The road tunnel will connect outbound traffic from Sentosa Island directly to Kampong Bahru Road/Lower Delta Road and Keppel Road bypassing the busy traffic junctions of Sentosa Gateway and Telok Blangah Road, as well as Telok Blangah Road and Kampong Bahru Road.

Motorists traveling through these two junctions into Sentosa Island or to the other developments in the area can expect a smoother journey, while outbound traffic from Sentosa will have a direct connection towards the ECP via Keppel Road or the AYE via Lower Delta Road through this tunnel.

Concurrently with the tunnel construction, the LTA will be widening Lower Delta Road from two lanes to three lanes in both directions between Kampong Bahru Road and AYE. In addition, the LTA will upgrade the Lower Delta Flyover to allow motorists from Lower Delta Road (north bound) to connect directly to the AYE (city bound).

Construction Process

Construction of the tunnel along Sentosa Gateway is in progress. The contiguous bored pile wall along Kampong Bahru Road has been completed. St James District Office building along Telok Blangah Road has been demolished for tunnel construction.

Traffic is being diverted along Lower Delta Road for tunnel construction.

The guide wall, diaphragm wall and micropiles for the tunnel works along Keppel Road adjacent to Keppel DistriPark have been constructed and excavation work for tunnel construction is in progress.

Diaphragm wall construction and micropiling works along Sentosa Gateway are in progress. Construction is also ongoing for columns for the new pedestrian overhead bridge (POB) and underpinning of Sentosa Monorail Express. Steel pipes are being installed for the piped box tunnel at Kampong Bahru Road/Telok Blangah Road junction.

Construction of the Sentosa Gateway Tunnel is expected to complete by end of 2015.

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Artist Impression

Tunnel entrance at Sentosa Gateway

Tunnel exit along Kampong Bahru Road

Tunnel exit along Keppel Road

Sentosa Gateway Tunnel

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Site Photos

Ongoing construction of new POB columns and supporting columns for the underpinning of Sentosa Monorail Express

Alternate view of completed transfer frame columns and ongoing works along Sentosa Gateway centre median

Construction of diaphragm wall in progress along Kampong Bahru Road centre median

Ongoing pipe installation using microtunneling machines for piped box construction works

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Last Updated: 18 April 2013
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