The West Gate Tunnel opened on 14 December 2025. Transurban, the operator for the tunnel, will continue monitoring air quality for up to 5 years.

Please visit the Linkt website for air quality monitoring reports from 14 Dec 2025.

Please note: The November 2018 report has been updated to correct some minor factual inconsistencies. There are no changes to the results or any exceedance or discussion comments.

Please note: from 9 – 22 August 2018, our air quality monitoring stations were changed over and did not record data. To see data from this period, you can view historical data recorded at nearby EPA stations.

The June report was tabled at the Environment Effects Statement panel hearings in August 2017.

Find out more

See the West Gate Tunnel Project’s Environmental Performance Requirements.