Project Proponent Main Roads Western Australia Proposal description The proposal is to design and construct the extension of the Tonkin Highway from Mills Road West to South Western Highway. The proposal is approximately 32 km in length and includes the design, construction and use of a highway of six lanes from Mills Road West to Mundijong Road and four lanes from Mundijong Road to South Western Highway. Proposal Content Document Proposal Content Document - March 2025.pdf (PDF, 22.51 MB) Assessment Number 1367 Region Perth Referred under EP Act s38 Industry sector Infrastructure Last updated March 27, 2025 Current Status Ministerial Statement published 2. Decision on whether to assess this proposal Chair's Determination Assess - Public Environmental Review Preliminary Environmental Factors Social Surroundings Flora and Vegetation Terrestrial Fauna Inland Waters Environmental Quality Date published Monday, January 8, 2001 - 12:00 3. Assessment Environmental Review Environmental Review documentation PER document (PDF, 37.01 MB) 4. EPA Report on assessment EPA Report Number 1043 EPA Report Tonkin Highway Extension from Mills Road West, Gosnells, to South Western Highway, Mundijong (PDF, 3.27 MB) Key Environmental Factors Flora and Vegetation Terrestrial Environmental Quality Inland Waters Environmental Quality Date published Monday, February 25, 2002 - 12:00 Appeals close Monday, March 11, 2002 - 12:00 5. Decision on proposal and implementation of proposal Ministerial Statement Date of approval Wednesday, June 12, 2002 - 12:00 Ministerial Statement Ministerial Statement 595.pdf (PDF, 1.32 MB) Post-assessment changes Attachments Section 45C Notice and Summary of Reasons.pdf (PDF, 200.41 KB) Contemporising Ministerial Statement 595 Table.pdf (PDF, 108.11 KB) Ministerial Statement 595 - June 2002 - Deleted and Replaced.pdf (PDF, 6.11 MB) Date of approval s. 45C Thursday, March 27, 2025 - 12:00
