Car and ute crashes

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Crash Closes Northbound Lanes of Sydney Harbour Tunnel – Sydney, NSW – 27 August 2025

27 August 2025 · about 1:40pm · Sydney Harbour Tunnel, Sydney, New South Wales

Published 27 August 2025 · Updated 1 September 2025

Key facts

When
27 Aug 2025Wednesday, about 1:40pm
Where
Sydney Harbour Tunnel, Sydney, New South Wales
Type
Multi-vehicle crash in tunnel
Injured
1 personNo confirmed reports of serious injuries at this stage.
Investigation
NSW PoliceNSW Police are examining: The circumstances leading to the crash inside the Sydney Harbour Tunnel.

What happened

Incident Overview

Traffic was severely disrupted on Wednesday afternoon, August 27, 2025, after a crash forced the closure of northbound lanes in the Sydney Harbour Tunnel. The incident occurred at approximately 1:40 pm, prompting police and traffic authorities to divert vehicles via the Cahill Expressway and Sydney Harbour Bridge. Significant congestion built outside the tunnel before easing after lanes reopened around 3:00 pm.

“Motorists were urged to avoid the area on Wednesday afternoon.” — Live Traffic Sydney

  • Crash Date: Wednesday, August 27, 2025 (approximately 1:40 pm)
  • Location: Sydney Harbour Tunnel, Sydney, New South Wales
  • Details of vehicles involved have not yet been released by authorities.
  • Fatality:
    • No fatalities reported at this stage.
  • Serious Injuries:
    • No confirmed reports of serious injuries at this stage.
  • No Injuries:
    • Unconfirmed, pending NSW Police updates.

The closure of northbound lanes created significant congestion across Sydney’s CBD and inner suburbs during the afternoon period. Traffic diversions caused delays on the Harbour Bridge and Cahill Expressway, with thousands of motorists impacted. The incident highlights the vulnerability of Sydney’s road network when tunnel traffic is disrupted.

Emergency Response

  • NSW Police attended the scene following reports of the crash.
  • Northbound lanes of the Sydney Harbour Tunnel were closed, causing major traffic disruption.
  • Motorists were diverted via the Cahill Expressway and Harbour Bridge until lanes reopened around 3:00 pm.

“Traffic was built up outside the tunnel, but began easing about 3pm.” — NSW Police

Investigation

NSW Police are examining:

  • The circumstances leading to the crash inside the Sydney Harbour Tunnel.
  • Traffic and environmental conditions at the time of the incident.
  • Witness accounts and CCTV footage from the tunnel network.

Appeal for Information

Authorities are urging anyone with information or dashcam/CCTV footage to contact:

  • Crime Stoppers NSW: Call 1800 333 000 or report online at [www.crimestoppers.com.au](https://www.crimestoppers.com.au)
  • Witness Reporting: Contact NSW Police directly or at the nearest local police station.
Source
Crime Stoppers NSW: 1800 333 000

If you were involved in a crash in Queensland

  1. 01Injury claims are usually made against the compulsory third party (CTP) insurer of the vehicle at fault.
  2. 02A Notice of Accident Claim Form is generally due within 9 months of the crash, or within 1 month of first consulting a lawyer, whichever is earlier.
  3. 03Families of people killed in a crash may be able to claim for loss of financial support.

General information only, not legal advice.

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