​​​​​​​​​​​​​​​​​Reid Highway Dual Carriageway 

Altone Road to West Swan Road

  • Widening the highway and constructing Arthur Street Bridge
  • Construction is due for completion by middle of the year
  • Improve safety and ease congestion

Image of Reid Highway project site 

Image: Photograph of the Reid Highway construction site with machinery 


This is the last section between Marmion Avenue and Great Northern Highway that is not a dual carriageway. The dual carriageway between Beechboro Road North and Altone Road was constructed as part of NorthLink WA.

Works include:

  • A four kilometre, two lane second carriageway between Altone Road and West Swan Road (construction to occur on the southern side of the existing carriageway)
  • New shared path and local links on the southern side of the highway
  • Modifications to Reid Highway and West Swan Road intersection
  • A new bridge over Reid Highway, connecting the northern and southern sections of Arthur Street
  • Install bridge beams and deck for a second carriageway across Bennett Brook
  • Extend the underpass to link Victoria Road
  • Noise walls (location and design yet to be determined)
  • Signage, fencing, drainage, landscaping and street lighting

The project also includes a new bridge over Reid Highway at Arthur Street to connect the growing communities of Caversham and Dayton.​   

Project Update

Construction Update – February 2020 

Earlier this month, the project achieved a major milestone with the successful installation of eight bridge beams over Reid Highway. Read our latest Construction Update​ for more details about this lift, as well as an update on the progress of our works at the intersection of Reid Highway and West Swan Road and our plans to revegetate the site upon completion.

Beam Installation Complete
The new bridge over Reid Highway at Arthur Street progressing well. The installation of four concrete beams to complete the Arthur Street Bridge span was completed overnight on Thursday 13 February, taking only one night to complete​. The largest of the precast concrete beams are 35 metres long and weigh more than 110 tonnes each.

Update to PSP detour route

To ensure the safety of cyclists while we construct the Reid Highway Dual Carriageway Project, Reid Highway is closed to cyclists between Altone Road and West Swan Road until June 2020. As of 28 January 2020, the detour route between Lord Street/Drumpellier Drive and West Swan Road will change. This change is due to works taking place on the roundabout at the intersection of Arthur Street and Grandis Road/Victoria Road in Dayton. Read our latest update for more information​ ​​

Arthur Street Roundabout Closure

The roundabout at the intersection of Arthur Street, Grandis Road and Victoria Road will be closed for up to five months from the 28th January 2020. The closure is required to enable removal and reconstruction of the roundabout to tie in with the new Arthur Street bridge and relocation of the existing underground sewer main. Read the latest roadworks update for more information

Construction Update

The project is taking shape and is on track for completion in mid-2020. Read the December Construction Update​ to find out more about forthcoming traffic changes, our use of recycled material and the progress of Arthur Street Bridge.  

Works commencing to modify the Reid Highway and West Swan Road Intersection

As part of the project, modifications are being made to the busy intersection of Reid Highway and West Swan Road to increase capacity and improve traffic flow and safety. Initial clearing works are underway to prepare the site for construction in the new year.Open the Construction Update Document for more details.

Reid High​way closed to cyclists between Altone Road and West Swan Road

​As construction continues, bike detours will be in place between November 2019 and June 2020 to ensure the safety of cyclists while construction works take place. 

A new shared path will be constructed along the south side of Reid Highway between Altone Road and West Swan Road to improve cyclists’ access to and from the Swan Valley. The new shared path is expected to be open mid-2020.
Open the latest Project Update PDF for more information and available detour routes. ​



July 2018: Issue Request for Proposals to shortlisted applicants

March 2019: Contract awarded to Decmil Southern Pty Ltd

Mid-2019: Construction commencement

Mid-2020: Construction completion​


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Image of Reid Highway Widening design conceptImage: Illustrated concept map of the Reid Highway Widening design, with legend


  • Remove bottleneck and reduce the need for lane merging
  • Improve traffic flow and ease congestion
  • Improve safety
  • More efficient, reliable movement of freight
  • Complement NorthLink WA, by providing an effective connection to Roe Highway
  • Improve cyclists' access to the Swan Valley


This $70 million project is jointly funded by the Australian and State Governments as part of a $2.3 billion package of road and rail infrastructure works.​

Last Updated: 20 February 2020