muir Road bridge
Powering Sydney’s Future Design & Construction of Bedwin Road Cycleway & Cable Bridge Special Crossing
As part of the Powering Sydney Futures projects, the construction of Muir Road cable bridge was required to allow transmission lines to cross rail corridors. The project is located within the City of Canterbury Bankstown local government area.
The works involved specific and complex electrical and structural requirements. The bridge is constructed from prestressed concrete (PSC) girders with voids to allow for cabling to be incorporated into the design. The design required two sections to avoid conductivity; with the top section comprising of FRP reinforcement with is non-conductive thus eliminating the potential for electro-magnetic loop inductions to be developed.
The Muir Road Cable Bridge is a 29.5m long single span bridge with a total width of 3.1m and 2.7m between kerbs. The bridge has a minimum vertical clearance of 7 metres to track. The bridge abutment supports are positioned behind the existing Muir Road bridge wing walls and based on the current track alignment while lateral clearances meet the requirements of the ASA transit space standard.
The project was complex due to its location and the number of approval pathways and interfaces with Sydney Trains. The Muir Road cable bridge required a multi-disciplinary design approach to the scope of works which included investigation works, structural design, design approval and construction. The Project commenced on 03 February 2020 and was completed on the 30th October 2020 and was delivered two weeks ahead of schedule.
Key features of the project include:
- Design Investigation requirements
- Sydney Trains CCB (Configuration Control Board) Process
- Construction of Abutment A has several challenges based on limited space and it is positioned on a steep embankment
- Major Crane Lift
- Access and Egress to construct on an extremely busy road network