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Pacific Motorway (M1) - Gateway Motorway - Pacific Motorway Merge

Funding Program:Investment Road and Rail Program
Status:Under construction
Transport Mode:Road
Expected Start/Finish:Early 2018 - Mid 2020
Estimated Project Cost:$195,300,000
Australian Government Contribution:$115,000,000
Local Council/Shire:Logan City Council
Corridor:Sydney - Brisbane

Project Description

This project will see a major upgrade of the southbound section of the M1 Pacific Motorway, between Eight Mile Plains and Rochedale Road where it merges with the southbound lanes of the Gateway Motorway. The main features of the project are:

  • realignment of the Pacific Motorway to four lanes southbound from adjacent to the Eight Mile Plains Busway station, reducing to three lanes at the merge with the Gateway Motorway;
  • widening of the Pacific Motorway to five lanes southbound from the Gateway Motorway merge;
  • widening of the Motorway to five lanes southbound from the south of Underwood Road through to Rochedale Road off ramp and transitioning back to three lanes approximately 450 metres south of the Rochedale Road off-ramp;
  • provision of a two-lane off-ramp at Rochedale Road with the left lane for through and left turning vehicles including modifications to the Rochedale Road;
  • a new bus only ramp from School Road;
  • a new bridge at Underwood Road over the Motorway and new approaches to join with the existing intersections at Caloma Street and School Road; and
  • managed motorway infrastructure including closed circuit television and vehicle detection on and off ramps. 


When complete, the expected benefits of this project will include:

  • reduce the extent and duration of congestion along the Gateway Motorway to Rochedale Road section of the M1;
  • enhance freight efficiency and productivity along the M1 corridor;
  • maximise the resilience of the freight network by providing an alternative to the New England Highway transport corridor;
  • improved travel time reliability and safety; and
  • minimise the social impacts of traffic issues on parallel local roads.


The Australian Government will provide a capped contribution of $115 million, in partnership with the Queensland Government.


Project early works commenced in September 2017. Major construction commenced in April 2018 and is expected to be completed in mid-2020.

Disclaimer: The material contained in this site is made available on the understanding that the Department is not thereby engaged in rendering professional advice for a particular purpose. Before relying on the material in any important matter, users should carefully evaluate the accuracy, completeness and relevance of the information for their purposes and should obtain appropriate professional advice relevant to their particular circumstances.

Project details last updated: 3/05/2018