In an effort to enhance green spaces and promote biodiversity, Singapore’s first “green bridge” has been constructed over the Bukit Timah Expressway (BKE) between the Dairy Farm exit and the Pan Island Expressway (PIE) exit. Known as the Eco-Link@BKE, the hourglass-shaped bridge spans the expressway at approximately 26m wide.
Calibre Consulting provided construction supervision of Eco-Link@BKE, including earth retaining structures, drainage system, and soil and anchorage systems across the BKE.
The ecological bridge, which has been planted with native tree species, provides a link between two separate nature reserves that had previously formed one rainforest before the expressway was constructed – Bukit Timah Nature Reserve (BTNR) and Central Catchment Nature Reserve (CCNR).
It is anticipated that the bridge will serve as a corridor for wildlife between the two reserves, providing greater foraging and mating opportunities and conserving biodiversity. The wildlife include mammals, birds and insects, including several rare and geographically restricted species, such as the Lesser Mousedeer (tragulus kanchil), and Sunda Pangolin (manis javanica).
Although normal public access to the bridge is restricted to minimise disturbance to the wildlife, Eco-Link@BKE will be utilised by private guided tours.