Local Road Improvements
Working with Local Government to improve local roads across Western Australia.
We support local councils to improve roads, bridges and paths - ensuring safe, efficient connections for communities.
The following works and improvements are being delivered by Main Roads with/on behalf of the local council.
We are undertaking major repairs and refurbishment works on Scott Street bridge over the Helena River, Helena Valley, on behalf of the Shire of Mundaring.
Work started in March 2023 and will take about six months to complete. It includes reinforcing and replacing elements of the bridge structure and replacing the bridge deck, which will be undertaken in two stages:
- Stage 1: demolish and rebuild the eastern carriageway
- Stage 2: demolish and rebuild the western carriageway
Some vegetation clearing and pruning will also need to be undertaken to establish a clear zone around the bridge for fire mitigation.
Roadworks
April to October 2023
24/7 contraflow over the Scott St Bridge, between Clayton Rd and Helena Valley Road (over the Helena River)- Stop/Slow works, expect delays.
Most of the work will be undertaken between 7am and 7pm weekdays, with occasional Saturday works. Nightworks, requiring a detour for motorists, are only expected to install and remove traffic barriers.
During the construction period, traffic over the bridge will be reduced to a single lane, with stop/slow traffic management in place. Road users should expect delays, especially during peak periods including school drop-off/pick-up.
While the eastern carriageway is reconstructed, cyclists and pedestrians will be able to use a temporary path on the western side of the bridge. Once complete, a new, wider path adjacent to the eastern carriageway will be available, improving access for cyclists and pedestrians.
Access for all businesses and residences will be maintained throughout the works.
Funding
This $2.4 million project is funded through the Federal Government's Roads to Recovery program.
We are building a new concrete bridge on Station Street, over the Canning River in Gosnells.
This work is being undertaken on behalf of the City of Gosnells. Service relocations should start by the end of September 2023 and take about a month to complete. Bridge construction should get underway in November 2023 and take a further 10 months.
This project is funded with $9 million from:
- Australian Government (Bridges Renewal Program): $4.5m
- State Government: $3.5m
- City of Gosnells: $1m
What to expect during construction
Most of this work will be undertaken during the day while the existing Cargeeg Bridge remains in operation. Road users should expect speed reductions through the worksite.
The footpath under the bridge will also be closed to pedestrians for safety reasons.
This project will require the removal of some vegetation, which has been approved by the Department of Water and Environmental Regulation (DWER).
Any after hours works or bridge closures will be advertised in advance.
Project scope
The new two-lane bridge will be built to the north of the existing single-lane Cargeeg Bridge, which was constructed in 1938 and is to be preserved by the City of Gosnells to provide pedestrian and cyclist access.
This location was selected by the City to avoid existing constraints, including the overhead power lines and private land which abut the southern side of the existing structure.

Station Street will be realigned to tie-into the new bridge and a shared path will be constructed to link to Cargeeg Bridge, providing improved local pedestrian connectivity and safety.
Local road street lighting, along with signs and line-marking, will complete the project. To future-proof the new bridge, provision has also been made to retrofit a shared path to the structure.
Why do we need a new bridge?
The ageing Cargeeg Bridge is built from timber and currently carries about 4000 vehicles per day. It provides an important link between the Gosnells town centre and the Martin residential area, as well as to and from local schools.
Replacing this single lane bridge with a new two-lane bridge will improve safety and efficiency by eliminating the long delays road users currently experience while waiting to cross the river. The new concrete structure will also cater for the increased loads associated with modern-day traffic.
For more information read the February 2023 Project update.