HMAS Stirling Low Level Bridge Repairs

Home | Defence | HMAS Stirling Low Level Bridge Repairs

Project Description

HMAS Stirling is the Royal Australian Navy’s primary base on the west coast and is located on Garden Island, 5km off the WA coast. The 305m low level bridge is located at the mainland end of the causeway which links the island to Point Peron.

The bridge comprises a reinforced concrete deck supported by a steel structure on steel piles, providing a two lane roadway. The abutments are reinforced concrete and steel sheet piling. There have been various repair works conducted since its commission in 1972, including most recently in 2007/2008.

Duratec and DDR were engaged to perform repairs due to the accelerated deterioration of the structural steel under the bridge deck. The scope of works included repairs to:

  • Structural steel supporting the deck (beams and piles).
  • Steel sheet piling.
  • Reinforced concrete abutments including cathodic protection.
  • Reinforced concrete deck soffits.
  • Reinforced concrete deck edges.
  • Guardrails.
  • Expansion joints at abutments and bents.
  • Also included was the removal of existing coal tar epoxy coatings from the underside of the bridge which required a fully encapsulated work area for the safe management of a hazardous material in a full working environment, including a negative air pressure filter and HEPA filters.


  • The works were carried out in part of the Cockburn Sound Marine Park. Duratec and DDR’s strong environmental management systems and controls ensured minimum impact on the environment.
  • Duratec and DDR developed an adjustable access system to allow for changes in the water level caused by tidal and climatic fluctuations.


  • Client

    Department of Defence


    Call DDR 1300 402 409

  • Project Type

Project Gallery

Related Projects

get In touch

Want more information about how we can help with your HMAS Stirling Low Level Bridge Repairs project? Please call on 1300 402 409, email us at info or simply fill in this form and we will get back to you.

Send your message

  • This field is for validation purposes and should be left unchanged.

See our Privacy Policy to learn more about how we use data.