KPE - Kallang-Paya Lebar Expressway
Singapore’s Kallang-Paya Lebar Expressway (KPE) involves constructing 12km of six lane highway to connect the East Coast Parkway with the north of the island at Tampines Expressway. The US$675 million project by the Land Transport Authority of Singapore includes approximately 8.5km of main cut-and-cover underground tunnels, eight interchanges and six ventilation buildings.
The Kallang–Paya Lebar Expressway is the third newest of Singapore's network of expressways. The southern section of the expressway opened first, on 26 October 2007 with the remaining section fully opened on 20 September 2008.
Connecting the East Coast Parkway and the Tampines Expressway in the north-east, the 6 lane expressway extends twelve kilometres, with approximately 8.5 kilometres
(5.28 miles) of main cut and cover underground tunnels running some 10 kilometres underground when fully completed. Built at a cost of approximately S$1.8 billion (US$1 billion), it is the longest subterranean road tunnel in Southeast Asia. The KPE is also believed to be the world's sixth longest underground road project at its time under construction. In all, the dual-carriageway expressway with three lanes in each direction will have eight interchanges, eleven on-ramps, and twelve off-ramps.
Construction on the expressway started in the year 2001, and was fully completed in 2008. On 23 June 2007, the northern end of the expressway between Tampines Road from the new Defu Flyover and the Tampines Expressway was opened to traffic, and was temporarily named Tampines Service Road. Tampines Road will therefore no longer connect with the Tampines Expressway at the Tampines Flyover. The Defu Flyover along Tampines Road, along with the traffic signals, were commissioned on the same day from 1000 hours.
On 27 July 2007, the LTA announced the opening of the southern ECP-PIE section of the expressway (Phase 1) to traffic on 26 October 2007. The entire expressway opened to traffic on 20 September 2008.
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