What engineering challenges were overcome to complete the Circle Line?

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Engineering Challenges Overcome for Circle Line Completion

The final stage of Singapore's MRT Circle Line presented significant engineering hurdles, primarily concerning the preservation of historical structures and the operation of existing infrastructure during construction. Crews successfully navigated these complexities to integrate the new stations into the city's transit network.
Tunnelling Beneath Historic Tanjong Pagar Railway Station

A key challenge involved tunnelling approximately 7 metres beneath the nearly century-old Tanjong Pagar Railway Station. This delicate operation required meticulous planning and execution to ensure the heritage building's structural integrity remained completely undisturbed throughout the construction process.
Working Under the Live Keppel Viaduct

Construction teams also faced the demanding task of carrying out works directly underneath the live Keppel Viaduct. This required careful management to protect the viaduct's foundations while enabling the essential tunnelling and station construction to proceed without disrupting existing traffic flow on the elevated structure.

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What engineering challenges were overcome to complete the Circle Line?

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