Work continues on tunnelling under Sydney Harbour for a new motorway, involving two large parallel tunnel bores that together provide three lanes in each direction. Reporting across outlets describes the excavation as a precision task, with crews using heavy underground equipment to dig through sections beneath the harbour while keeping tolerances tight.
All three sources state the tunnels are being built with a scale intended to accommodate future rail capacity as well: each tunnel bore is described as large enough to fit three metro rail tunnels. The outlets frame this as a sign of the engineering challenge and the level of planning required to fit multiple large conveyance systems within the same overall space.
While the specific wording varies, the coverage is aligned on the same project features—twin tunnels under the harbour, construction for a multi-lane motorway, and tunnel dimensions described in relation to metro rail tunnel cross-sections.
