Upgrading of Woodsville Interchange
Upgrading of Woodsville Interchange
Client: LTA
Project ID: ER198
Start Date: 
End Date: 

The existing at-grade road junction was reconfigured to improve overall traffic flow. Whampoa North Interchange was removed upon completion of upgrading works at Woodsville Interchange.
Project nameER198 – Upgrading of Woodsville Interchange
Location: – Singapore
Completion Date: – 2012
Service(s) Rendered: -Infrastructure Engineering / Transportation Engineering / Civil & Structural Engineering
Typology: – Infrastructure / Transportation
Project Cost: – SGD 130,000,000.00
Client: – Gammon Construction Ltd (Singapore)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   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, with the project expecting to be completed by 2012.

The project includes the building of three underpasses and an overpass. Two of the underpasses will have two lanes per direction each, stretching from Serangoon Road and Bendemeer Road to Upper Serangoon Road. The third underpass will have one lane and will stretch from MacPherson Road to Bendemeer Road. The flyover will stretch from a slip road of exit 15 along Pan Island Expressway to Kallang Way. In addition, once the project is completed, Whampoa North, a u-turn road from Bendemeer Road to Serangoon Road, will be closed to traffic and be removed, with the land returning to the government.

This project is one of the most expensive of its kind at S$20 million to S$30 million dollars and several times more expensive than any single flyover and tunnel project completed elsewhere in Singapore. It is one of the most complex as well due to the NEL tunnel beneath the interchange and a deep sewage tunnel which runs parallel to the expressway. Several buildings will be affected by the road widening and a portion of the former Serangoon Fire Station will have to be torn down.