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Mandurah Estuary Bridge Duplication



  • Road

    Project type
  • $136 million

    Total budget
  • Under Construction

    Project phase
  • Main Roads WA

    Lead agency
  • 500

    Jobs supported
  • Early 2024

    Start date

    Late 2025

    End date

Construction continues on a second traffic bridge alongside the current Mandurah Estuary Bridge.

Work is progressing to prepare for the eventual concrete casting and launch of bridge segments from the Waterlily Drive corner of the bridge.  Piling activities have also started on land with estuary piling to start soon.

The new two-lane bridge being constructed on the south side of the current bridge, will improve traffic flow and road safety. It will help meet demand created by population growth across Perth, Mandurah, Peel and the South West.

The new Mandurah Estuary Bridge will be constructed with capacity for three lanes. Although it will initially open with two active lanes in each direction, the third lane could be utilised in future when demand on Mandurah Road traffic warrants change.

A four-metre-wide path will be constructed under the bridge, connecting those walking or riding to the southern area of Mandurah.

Built in the 1980s, the original bridge was designed to be duplicated when required to meet increased demand from traffic.


  • Provision of additional traffic lanes
  • Improved road safety and traffic flow
  • Reduced traffic congestion
  • Better connected pedestrian access

Project map

This map shows an aerial view of the project location.

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