LTA awards $758m contract to build MRT tunnel that will go under Central Catchment Nature Reserve
LTA awards $758m contract to build MRT tunnel that will go under Central Catchment Nature Reserve. The Land Transport Authority (LTA) has awarded a $758 million contract to design and build a 5km tunnel for the Cross Island MRT Line’s second phase (CRLsecond), 2km of which would pass through the Central Catchment Nature Reserve. It has also awarded a $496 million contract for the Punggol interchange station as part of the CRL Punggol extension.
Both projects are set to begin construction in the first half of 2023, with passenger service beginning in 2032, according to the LTA. The 5km tunnel connecting Fairways Drive and Sin Ming Walk will be built by a joint venture of Obayashi Corp and Shanghai Tunnel Engineering Co. (Singapore).
According to the LTA, a massive tunnel boring machine with a diameter of roughly 12m will be used to construct the tube, which will extend up to 70m below earth – significantly deeper than the ordinary 20m to 30m. The LTA stated that all environmental mitigation measures would be performed. CRL building sites near environmentally sensitive areas should be reduced or relocated.
When building begins, the authority commits to keep stakeholders, including environmental groups, informed. Obayashi was involved in the construction of the North East Line’s Dhoby Ghaut station, while Shanghai Tunnel Engineering is now working on the Thomson-East Coast Line’s Katong Park and Bayshore stations (TEL).
When the CRL Punggol extension opens in 2032, commuters from Punggol Central to Pasir Ris will be able to reduce their traveling time from 40 minutes to 15 minutes. Singapore’s eighth MRT line is the CRL. The CRL’s inaugural phase of 29 kilometers was announced in 2019. The construction of the 12 stations under this stage has begun and will be finished by 2030. In September, the 15km phase two, which contains six underground stations from Turf City to Jurong Lake District, was revealed. The railway, when completed, will increase access to Singapore’s western region.
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