Perth City Link, Perth, Western Australia



Perth City Link, Perth, Western Australia
  • Client: John Holland
  • Contract: value $18m

Project description

Monford worked on the preliminary stage of the $609 million rail project, Perth City Link. It aims to provide greater efficiency to Perth’s public transport system and reconnect the city centre to Northbridge for the first time in more than 100 years.

Scope of work

  • Sink the Fremantle Line between William Street and Lake/King Streets
  • Upgrade Perth Station with new tiling, lighting and services, and convert Platform 9 into an island Platform 8/9
  • Create a new tunnel under the northern end of the Barrack Street Bridge to service the new Platform 9
  • Construct complex structures – the 340m x 1.0m diaphragm wall to form the permanent wall of the station for the new 340-metre long tunnel at the northern end of the Barrack Street Bridge with excavation (top-down construction method) – over 9,500m3 of excavation, 14 (2.8m x 1m) barrettes, founded at 36m below ground level, static load test on barrette and diaphragm wall panel, soil improvement by jet grouting for the tunnel boring machine break-in
  • Extend the Joondalup Line tunnel roof from Lake to Milligan Streets to align with the new Fremantle Line tunnel – 14 tilt-up panels to cover the entrance and 135 roof planks through a series of night closures
  • Construct the relocated principal shared pathway along Roe Street to reinstate pedestrian and cyclist amenity – staged traffic management to mitigate traffic disruption
  • Remove and upgrade the two eastbound lanes along Wellington Street and the William Street footbridge – managed safety and traffic aspects, particularly as the works were near the general public
  • Remove and store the heritage-listed timber Milligan Street footbridge and remove and reinstate Horseshoe Bridge –dismantling, labelling and wrapping each of the bridge components in accordance with the Heritage Council of Western Australia’s requirements