Seventh & Third Avenue Bridges



We will soon start work on a new Third Avenue Bridge over the railway in Mount Lawley. 

Funded by the WA State Government, this new bridge is the second stage of a project to improve safety and efficiency on the local road and rail network.  Staggered to minimise disruption to road users and local community, the project started with replacement of the Seventh Avenue Bridge, which opened to traffic in May 2015.


 Photo - Seventh Avenue Bridge Opening May 2015.JPG      Image: Photo - Opening May 2015 - Seventh Avenue Bridge.JPG


Current status

We expect to award a contract for the new Third Avenue Bridge by the end of August 2015 and the old bridge is likely to close to traffic in September.  Demolition is currently scheduled for mid-October with opening of the new bridge to traffic expected by mid-2016.


Project Scope

The existing Third Avenue Bridge was built in 1910 and has a short span over a steep railway decline.  Now over 100 years old, it has reached the end of its design life.

To cater for the planned expansion of the Perth-Midland rail line to four lines, the new concrete bridge will have a single span of about 22m.  It will be built to meet current safety standards and have no weight restrictions.  Twice as wide as the old bridge, it will include a second lane eastbound to separate traffic turning left and right on Whatley Crescent and ease congestion at peak periods.  The existing Principal Shared Path will be redirected through a new 30m underpass closer to Whatley Crescent to facilitate expansion of the rail line.  A new shared path will also be included across the bridge.


Construction impacts

While every effort will be made to minimise the impact of the project, road users and residents should expect some disruption during construction of the new bridge.

The majority of works will be carried out from 7.00 am to 7.00 pm Monday to Saturday however some after hours works are likely during demolition and rail shutdowns.

Traffic islands and roundabouts on Whatley Crescent and Railway Parade, between Second and Fourth Avenues, will be demolished to make room for temporary traffic lanes away from the construction site.  The existing Principal Shared Path will also be diverted onto Whatley Crescent.

Posted speeds on Whatley Crescent and Railway Parade will be reduced to 40 km/h through the construction zone and some delays and occasional road closures can be expected.

To reduce congestion through the construction zone, road users travelling in and out of the city are encouraged to use Guildford Road and Beaufort Street as alternative routes where possible.  Remaining traffic on Whatley Crescent and Railway Parade will be diverted across the railway via the new Seventh Avenue Bridge or Caledonian Avenue level crossing.


More information

Leanne Pitcher, Main Roads’ Community Relations Representative

Tel: 0408 923 249




Modified: 27 May 2015