The New South Wales (NSW) state and Australian federal governments have announced a joint funding package worth A$500m ($322.26m) to initiate the Mona Vale Road West upgrade.

This infrastructure project is designed to address the congestion issues on one of the key arterial roads in the Northern Beaches area in NSW.

The NSW State Budget has allocated A$250m for the upgrade, matching the Australian national government's pledge announced on 22 March 2025 by its federal infrastructure minister, Catherine King.

The project will expand a 3.4km stretch of Mona Vale Road from two lanes to four, enhancing connectivity between McCarrs Creek Road, Terrey Hills, and Powder Works Road, Ingleside.

Key features of the upgrade include a new traffic signal at Kimbriki Road with additional turning lanes and a truck climbing lane, relocation and access changes to Tumburra Street, restricted access at Addison Road, and a new local road connection.

The project also focuses on pedestrian and cyclist facilities with a shared-use path, improved street lighting, and landscaping.

To address environmental concerns, the project will incorporate a 40m fauna bridge and two underpasses for wildlife.

NSW Minister for Roads Jenny Aitchison said: “I am delighted to be able to give the green light on this project which will make a real difference to the local community with congestion and safety improvements over 3.4km of one of the busiest arterial routes on the Northern Beaches.

“I acknowledge the constructive role played by the local state MP [Member of Parliament], Jacqui Scruby, and the local federal MP, Sophie Scamps, in advocating for this project to be brought forward. This is an example of local representatives working together across the aisle for a good community outcome.

“The most important thing this announcement delivers in [is] the certainty for the project to proceed. Transport for NSW will now be able to move ahead with critical planning work along this important corridor that has significant biodiversity, terrain and technical challenges to be addressed.”

Last month, the NSW Government announced progress with the A$76m Mandalong Road upgrade, which entered its detailed design phase.