Land Transport Authority (LTA) has awarded three contracts worth a combined S$954.1m ($704.1m) to construct the viaduct between Sungei Seletar and Admiralty Road West on the North-South Corridor (NSC) in Singapore.

LTA awarded a contract of S$365.9m ($270m) to a consortium formed of Wai Fong Construction, China Civil Engineering Construction (Singapore) and China Railway 11 Bureau Group (Singapore).

The companies will design and build a 3.1km section of the viaduct from Sungei Seletar to Yishun Avenue 5.

The second and third contracts were given to Hyundai Engineering & Construction, who will design and build 4.5km of the viaduct.

Worth S$294.3m ($217.2m), the second contract covers the construction of the viaduct between Yishun Ave 5 and Woodlands Ave 10.

The third contract is for the viaduct from Woodlands Ave 10 to Admiralty Road West and is worth S$293.9m ($217.6m).

Construction is expected to start in the first quarter of next year. As of now, LTA has awarded all 14 civil contracts to construct the NSC.

The NSC will cover a road stretch of nearly 21.5km, connecting growing towns in Singapore’s north region to the city centre.

Following completion in 2026, the project is expected to reduce traffic for commuters in Woodlands, Sembawang, Bishan, Toa Payoh and other towns.

It will be Singapore’s first integrated transport corridor, featuring continuous bus lanes and at-grade cycling trunk routes to serve public bus commuters, cyclists and pedestrians.

In 2017, a contract of S$809m ($601m) was awarded to Samsung C&T to design and construct a stretch of the NSC.

Earlier this year, LTA awarded a S$615.9m ($456.7m) contract to Shanghai Tunnel Engineering for the construction of a section of NSC tunnels.

Last year, LTA awarded two civil contracts of S$1.16bn ($864m) to build two sections of the NSC.