> ## Content Index > Fetch the complete content index at: https://www.carexplore.com.au/llms.txt > Use this file to discover other available public pages before exploring further. # 10,000 NSW Drivers Get Major Win - URL: https://www.carexplore.com.au/10-000-nsw-drivers-get-major-win/ - Published: 2025-09-07T04:23:20.000Z - Updated: 2025-09-07T04:23:20.000Z - Description: New Mount Street underpass opens, giving 10,000 cars daily access to the Cahill Expressway and easing traffic in Sydney. - Author: Dylan Anderson - Tags: Car News, NSW, New South Wales From 5 September 2025, a new 46-metre vehicle underpass has opened beneath Mount Street at North Sydney, providing a dedicated southbound route for up to 10,000 motorists daily. This underpass connects drivers from the Warringah Freeway to the Cahill Expressway, offering access to the City East, Airport, and Eastern Suburbs. [NSW’s New $65 Million Upgrade for Drivers$65m plan to widen 7 key South West Sydney roads, easing congestion and boosting safety for 100,000 daily motorists.![](https://www.carexplore.com.au/content/images/icon/CarExplore-Favicon-2861.ico)CarExploreDylan Anderson![](https://www.carexplore.com.au/content/images/thumbnail/NSW-Major-Road-Upgrade-.webp)](https://www.carexplore.com.au/nsws-new-65-million-upgrade-for-drivers/) ### Benefits for Motorists and Bus Users The new underpass is designed to ease congestion and improve journey reliability for motorists. Once the dedicated southbound bus lane opens next year, it will also streamline travel for thousands of buses, removing the need for merging and weaving, and providing uninterrupted access into the city. ### How to Access the New Route Motorists should remain left on the Warringah Freeway and use the newly opened section of the Kirribilli exit (Alfred Street North) to enter the Mount Street underpass. Signage has been installed to assist drivers. Those who miss the turn will need to detour via the Sydney Harbour Bridge and CBD before reconnecting with the Eastern Distributor. ### Construction Methods The underpass was constructed using advanced excavation technology, including a remote-controlled continuous miner that removed over 3,000 cubic metres of sandstone and rock. This technique reduced noise and disruption compared with traditional rock hammering. An ‘upside down’ construction method was used, with the roof built first to allow pedestrians to continue using Mount Street during excavation. [How a NSW Man Lost his License InstantlyA NSW man lost his licence instantly after being caught speeding at 194km/h. Learn about the serious penalties for speeding offences in NSW in 2025.![](https://www.carexplore.com.au/content/images/icon/CarExplore-Favicon-2862.ico)CarExploreDylan Anderson![](https://www.carexplore.com.au/content/images/thumbnail/How-NSW-Man-Lost-License-48.webp)](https://www.carexplore.com.au/how-a-nsw-man-lost-his-license-instantly/) ### Broader Project Context The Warringah Freeway Upgrade is a key enabling project for the Western Harbour Tunnel, Sydney’s first new harbour crossing in 30 years. Together, these projects will improve connectivity between Sydney’s north, west, and airport precincts. ### Daily Traffic Volumes The Warringah Freeway is one of Australia’s busiest roads, with approximately 250,000 vehicles and 150,000 bus passengers using the corridor each day. --- [NSW Drivers Prepare For Huge Toll Shake-UpNSW drivers brace for big toll changes with new public roads, rising revenues, and a $60 weekly cap easing costs.![](https://www.carexplore.com.au/content/images/icon/CarExplore-Favicon-2863.ico)CarExploreDylan Anderson![](https://www.carexplore.com.au/content/images/thumbnail/NSW-Toll-Shake-up-4.webp)](https://www.carexplore.com.au/nsw-drivers-prepare-for-huge-toll-shake-up/) [NSW’s Major New Speed Cameras BeginNSW activates average speed cameras for light vehicles from July 1, issuing fines up to $2959 for drivers exceeding limits.![](https://www.carexplore.com.au/content/images/icon/CarExplore-Favicon-2864.ico)CarExploreDylan Anderson![](https://www.carexplore.com.au/content/images/thumbnail/NSW-New-Major-Speed-Cam-5.webp)](https://www.carexplore.com.au/nsws-major-new-speed-cameras-begin/)