Mount Ousley interchange

The project has made good progress so far this year with some major milestones achieved. View the July 2025 (PDF, 3.02 MB) project update to find out more about what the project team has been doing on and off site, and what’s coming up.

Work on site will continue in August. Night work, at times, will be carried out between 7pm and 6am, Mondays to Thursdays, from Monday 4 August to Thursday 28 August 2025. 

For more information about work and traffic changes during August view the August resident update (PDF, 279.08 KB).

The Mount Ousley Road shared path bridge has received the go ahead and will now move into the detailed design stage.

The shared path and bridge will now be delivered as part of the Mount Ousley interchange project.

During the community consultation period in April and early May 2025, Transport received 233 pieces of feedback. There was strong support for the improved access to key destinations that the bridge will provide for those walking and cycling. 

Thank you to everyone who provided feedback.

A community consultation summary report (PDF, 11.8 MB) outlining what we heard is now available. 

Watch the latest project overview animation for the Mount Ousley interchange project.

The Mount Ousley interchange has been designed to improve safety for road users by separating light and heavy vehicles, improve travel time and efficiency for all motorists, support growing freight movements, and improve access to and from the M1 Princes Motorway and Wollongong CBD. 

This project is jointly funded by the Australian and NSW Governments.

• A heavy vehicle bypass lane for southbound travel, separating light and heavy vehicles
• Separate off ramps for southbound light and heavy vehicles exiting the M1 Princes Motorway
• Two heavy vehicle safety ramps
• A bridge over the M1 Princes Motorway with signalised intersections connecting the M1 Princes Motorway, Mount Ousley Road and the new access road to the University of Wollongong
• A commuter car park
• A roundabout that provides access to the M1 Princes Motorway and the University access road
• A shared path along the bridge over the M1 Princes Motorway and the University access road
• A shared path bridge over Mount Ousley Road connecting to Dumfries Avenue via a shared path boardwalk
• A southbound access road between Mount Ousley Road and University Avenue
• A pedestrian and cyclist bridge over the southbound access road
• A shared path connecting to the existing path from Helen Street, and upgrades to the shared path adjacent to TAFE NSW Wollongong
• Upgrade and extension of the existing pedestrian bridge over the M1 Princes Motorway at Northfields Avenue
• Five-metre-high noise walls along the northern side of the motorway and the southern side of Dumfries Avenue; and along the southern side of the motorway and northern side of Falder Place
• Three and a half metre high noise walls along the southern side of Mount Ousley Road, between Gowan Brae Avenue and the cul-de-sac at the western end.

• Mount Ousley interchange - Project overview map (PDF, 5.03 MB)

The interchange will replace the existing intersection of the Princes Motorway and Mount Ousley Road, improving connectivity, safety and efficiency to those travelling through the gateway to Wollongong.

The Australian and NSW governments have jointly funded the project.

Fulton Hogan was awarded the contract to design and build the new interchange in January 2024. Major construction work is underway.

Major work commenced in late 2024.

The project will take up to four years to complete, weather permitting.