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 of diaphragm wall along Kampong Bahru Road is in progress. Excavation for construction of tunnel structure along Sentosa Gateway, Keppel Road and Lower Delta Road is in progress. Steel pipes installation have been completed for the piped box tunnel at Kampong Bahru Road/Telok Blangah Road junction. Excavation works for the 1-lane piped box tunnel is ongoing.
Traffic is being diverted along Kampong Bahru Road and Lower Delta Road for tunnel construction and the road widening works along Lower Delta Road is ongoing.
The tunnel facility building basic structure has been completed. Mechanical and electrical installation is ongoing.
Construction of the Sentosa Gateway Tunnel is expected to complete by end of 2015.
Construction works in progress along Sentosa Gateway
View of excavation area and alternate view of beams launched for new POB
Construction works in progress along Kampong Bahru Road/Lower Delta Road centre median
Completed steel pipes installation for 1-lane piped box
Excavation of 1-lane piped box tunnel