Nicholson Road, Garden Street and Yale Road Grade Separation

Thornlie

In planningFuture

Improve traffic flow across the current intersection of Nicholson Road, Garden Street and Yale Road in Thornlie.

Nicholson Road, Garden Street and Yale Road <em>Grade Separation</em>

What's Happening

Project Update

Development work is underway to build an overpass over the current roundabout between Garden Street, Nicholson Road and Yale Road. The existing roundabout will be retained, allowing all movements between these roads. Movements between Nicholson Road (north approach) and Garden Street will be directed onto the new bridge over the existing roundabout.

The below animation outlines the proposed key project features.

Activities recently completed include: 

  • Early designs for road, bridge, pedestrian and cycling infrastructure, and drainage.
  • Early concepts for urban landscape and design, noise mitigation and visual screening.
  • Access and connectivity of side roads and pedestrian and cycling transport options.

Early works for the project started late 2024. The work included ATCO gas relocation and the recently completed extension of the shared path underpass below Nicholson Road.The Western Power service relocation works will start in 2026.

Service investigations will occur in the road reserve during February 2026, at various locations:

  • near the existing roundabout at Nicholson Road, Garden Street and Yale Road
  • the Yale Road and Murdoch Drive roundabout in Thornlie.

These works will be located off the road between 9am and 5pm Monday to Friday.  Temporary footpath detours and traffic management may be in place.

Read the latest Project Update.

Improve

safety

Reduce

traffic delays

Page last reviewed:  | Last updated: 

Acknowledgement of Country

The Government of Western Australia acknowledges the traditional custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders both past and present.

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