Coolawanyah Road and De Witt Road Intersection upgrade

The Coolawanyah Road and De Witt Road Intersection upgrade project will involve widening the intersection, resurfacing the road, upgrading the culverts, and adding more streetlights to improve visibility and safety. This work aims to address safety issues identified in previous Road Safety Audits, such as insufficient space for heavy vehicles, faded line markings, and inadequate lighting. The project will also include updating traffic islands and line markings, as recommended in the audits.

Located at the entrance to the Karratha Industrial Estate (KIE) in Karratha, WA, this intersection is crucial for accessing major businesses in the area and is part of the RAV 10 Network used by heavy vehicles.

The project is set to begin in January 2025 and will improve safety, functionality, and access for local businesses and the community. Throughout the works, access to businesses will be maintained, and detour routes will be provided during any necessary road closures.

This upgrade is funded by the Australian Government through the Department of Infrastructure, Transport, Regional Development, Communications and the Arts and is a key initiative to support the ongoing growth and success of the Karratha Industrial Estate. 

Important road information

The City of Karratha will be recommencing upgrade works at the Coolawanyah Road and DeWitt Road intersection from 25 June to early August 2025. 

To ensure public safety, Coolawanyah Road is closed between Mardie Road and De Witt Road until 25 July, 2025. Detours are in place via Mooligunn Road and Orkney Road and all businesses in the area remain accessible throughout the closure.

From 22 July, 2025, a traffic-controlled single lane closure will be in place on De Witt Road, adjacent to the Coolawanyah Road intersection to support the ongoing works.

Please follow all signage and allow extra travel time where possible. The City of Karratha thanks you for your patience and cooperation during these essential upgrades.

Following the road closure, further traffic management measures will be implemented until the anticipated practical completion date of early August. These measures may include temporary modifications to De Witt Road and Orkney Road.