North Sydney to Northern Beaches capacity improvements

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North Sydney to Northern Beaches capacity improvements

Potential investment options (Stage 2)
Sydney, New South Wales
Fast-growing cities
Efficient urban transport networks
Problem/Opportunity timeframe
Near term (0-5 years)
Proposed By
NSW Government
Date added to the IPL
17 February 2016
Map showing a section of northern Sydney road networks


The cost of congestion and poor access to and from Sydney’s Northern Beaches is significant. The Northern Beaches is connected to the rest of Greater Sydney by three transport corridors: Mona Vale Road, Warringah Road and Military Road /Spit Road. All three corridors experience significant levels of congestion and long and unpredictable travel times.  

Residents of the Northern Beaches rely heavily on private vehicles and public buses for travel. Public transport travel times can be long and unreliable.

The 2019 Australian Infrastructure Audit ranks the North Sydney–Northern Beaches Corridor as the fourth most congested corridor in Sydney’s evening peak periods during 2016, and forecast seventh most congested in 2031, as measured by total vehicle delays.

Sydney’s population of is forecast to grow from five million to eight million people over the next forty years. Travel demand across Sydney Harbour and onto the Northern Beaches is projected to increase, further exacerbating the already high levels of congestion.

Potential options

Potential options for addressing the identified problems focus on a motorway connection from the Warringah Freeway and the Gore Hill Freeway at Artarmon to Balgowlah and Killarney Heights, and an upgrade of the Wakehurst Parkway.

The proposal includes an access road connection at Balgowlah and complementary intersection modifications.

This proposal is expected to benefit freight, public transport and private vehicle users.

Together with the Western Harbour Tunnel and Warringah Freeway Upgrade Investment read proposal (Stage 3), this proposal captures the previous Western Harbour Tunnel and Beaches Link Priority Initiative on the Infrastructure Priority List.

The Northern Beaches (A8) corridor capacity Early-stage proposal (Stage 1) is separately included on the Infrastructure Priority List to address the part of the congestion problem in the Northern Beaches from Seaforth to Mona Vale.

Next steps

Proponent to complete business case development (Stage 3 of Infrastructure Australia’s Assessment Framework).