Skip links and keyboard navigation

Pacific Motorway Upgrade: M1/M3/Gateway merge


The Pacific Motorway southbound in the vicinity of the Gateway Motorway merge at Eight Mile Plains is currently experiencing high levels of congestion. It is operating over capacity during the afternoon peak resulting in significant delays and unreliable travel times. 


Eight Mile Plains to Rochedale.


Improved traffic flows, safety and reduced travel times.


Lendlease Engineering Pty. Ltd.


$190 million.

South Coast Region

Project info

The upgrade of the southbound section of the Pacific Motorway M1/M3/Gateway merge will improve these congestion issues.

The upgrade includes:

  • up to 5 southbound lanes on the Pacific Motorway between Eight Mile Plains and Rochedale South (Exit 19)
  • the relocation of the existing bus entry from the Eight Mile Plains Bus Station onto the Pacific Motorway
  • replacement of the Underwood Road bridge to a new 4 lane overpass
  • managed motorway technologies from Klumpp Road to Rochedale Road.

This project is part of the Pacific Motorway Upgrade Master Plan being delivered in priority stages as funding becomes available.

Key milestones

  • Late 2017: Contract awarded/design
  • Mid-2018: Construction commenced
  • Mid-2020: Project completion. 

Contact details

Phone: 1800 571 816
Fax: 07 5563 6611

Keep up-to-date

Residents and motorists are encouraged to subscribe to the free email and SMS traffic alert update service for this project. Register with the project team through the contact details.

Community info

Further information will be released to the wider community when detailed design for the upgrade is complete.

Media gallery

Latest news

Night works: Pacific Motorway and Gateway Motorway, Rochedale

From 1 July there will be intermittent construction activities carried out at night on the Pacific Motorway between Logan Road and Rochedale Road, from 7pm to 5am Monday to Friday, and 7pm to 7am Saturday and Sunday. Motorists can expect minor delays.

Some works will also take place on the Gateway Motorway, Rochedale and the southbound onramp. There will be a considerable increase in travel time if using this on-ramp. 

Works will include line marking, sign and barrier installation and some tree clearing.  These works take place at night when traffic volumes are lower to minimise impacts to motorway traffic.

Traffic control, including temporary lane closures will be in place. 

Seek alternative routes whenever possible.

Reduced speed limits: Pacific Motorway and Gateway Motorway, Rochedale

From 1 July 2018, the posted speed limit will be reduced to 80km/hr within the project area (please see map below for clarification on project area.)

The speed limit on local roads including Rochedale Road, Underwood Road and School Road will also be reduced during construction works. 

The reduced speed limit will remain in place throughout construction to ensure the safety of motorists and workers.

Last updated
16 October 2018