The Woodsville Interchange upgrading project commenced in the third quarter of 2007 with the awarding of the Singapore branch of
Gammon Construction Limited as the main civil contractor after a six-months study conducted by
Parsons Brinckerhoff Pte Ltd to evaluate the best construction method that is safe and best minimises inconvenience to motorists, residents and business owners. several times more expensive than any single flyover and tunnel project completed elsewhere in Singapore. It is one of the most complex construction as well due to the
MRT tunnel beneath the interchange and the Deep Tunnel Sewerage System which runs parallel to the
expressway. Several buildings will be affected by the road widening and the former Serangoon Fire Station will have to be torn down.
Benefits Once the upgrading project is completed, travel will be smoother between the
east and the
city; and the
northeast and the city. Traffic volume at the at-grade junction will also decrease allowing smoother traffic flow, especially for motorists entering Pan Island Expressway (westbound) from Upper Serangoon Road and MacPherson Road. The traffic capacity at this interchange will also increase to 11,000 vehicles per hour during peak hours. ==See also==