Tonkin Highway grade Separated Interchanges (Hale Road and Welshpool Road) - Additional Information

Closed 13 Nov 2022

Opened 3 Oct 2022


Main Roads Western Australia (Main Roads) is proposing to upgrade Tonkin Highway from south of Roe Highway to approximately 1 km north of Kelvin Road to a six-lane dual carriageway. The Proposal will include construction of a half diamond with north facing ramps at the Hale Road intersection in Forrestfield and a grade separated interchange at the intersection of Tonkin Highway and Welshpool Road in Wattle Grove.

An Environmental Review Document (ERD) has been prepared by Main Roads in accordance with Environmental Protection Authority procedures and is released for public review.

The ERD describes the proposal, examines the likely environmental impacts and the proposed management measures.

Hard copies of the document may be purchased for $10 (including postage and packaging) or a USB version is available free of charge from:

Main Roads Western Australia

Waterloo Crescent

East Perth, WA 6004

Ph: 138 138

Copies of the document may also be downloaded from

Copies of the document will be available for examination at:

  • Forrestfield Public Library
  • Lesmurdie Library
  • Mills Park Library; and
  • State Library of Western Australia.

Public submissions are to be received by the EPA by 13 November 2022

Submissions are to be made at:

Alternatively submissions can be

posted to:


Environmental Protection Authority

Locked Bag 10

Joondalup DC  WA 6919.

Delivered to:

The Environmental Protection Authority

Prime House

8 Davidson Terrace

Joondalup  WA  6027.

If you have any questions on how to make a submission, please ring the EPA Services of the Department of Water and Environmental Regulation on 6364 7000.


  • All of Western Australia


  • Public


  • Public Environmental Review