Tunnelling under an overpass, preserving a monument: The engineering challenges behind the Circle Line loop
Engineers in Singapore successfully completed the Circle Line loop by boring a tunnel directly beneath a busy viaduct. The project required complex structural work, including transferring the viaduct's weight to new micropiles to ensure safety during excavation.
Why it matters
This demonstrates advanced civil engineering techniques required to expand urban infrastructure without disrupting existing traffic.
The three new stations – Prince Edward Road, Cantonment and Keppel – open for public preview on Jul 4 and enter service on Jul 12.
The article is a technical report on infrastructure development.
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