Problem to be addressed
Bunbury is one of the fast growing regional cities in Australia, with the population projected to grow by 1.6% on average from 175,900 in 2016 to 206,640 by 2026. Two of Bunbury’s major industries, mining and tourism, place pressure on the local road network, with the road network near the Port of Bunbury carrying a mix of freight and light vehicle traffic (including local, regional and tourist trips).
The current network does not separate traffic streams and has variable speed limits which negatively impacts freight efficiency. Mixing freight and regional movements with local traffic negatively impacts on safety, amenity, tourism and urban development.
Freight routes in the South West region of Western Australia incorporate several at-grade rail crossings and intersections where speed limits have been reduced, impacting on the overall network efficiency. These factors contribute to the increasing costs for freight operators and industry and have a detrimental impact on the local community.
The Bunbury Outer Ring Road comprises a 27 kilometre, 4 lane, grade-separated dual carriageway highway at the outer edge of Bunbury connecting the Bussell Highway to the Forrest Highway.
The project also consists of:
- Grade separated interchanges at Forrest Highway (near Australind), Raymond Road, South Western Highway North, Wireless Road (Waterloo interchange), Willinge Drive, Lillydale Road and Bussell Highway (north of Lakes Road).
- Grade separation at river crossings, rail crossings and local roads, including Clifton/ Paris Road, South Western Highway, Boyanup-Picton Road
- Construction of local access roads
- Extension of Willinge Drive to South Western Highway.
Economic, social and environmental value
Economic benefits of the project include travel time savings, vehicle operating cost savings for both private vehicles and commercial vehicles. Other benefits include crash cost savings and environmental benefits.
The proponent’s stated benefit-cost ratio is 1.34, with a net present value of $243 million (7% real discount rate).