Turnbull offers $1bn upgrade to Qld's M1

Prime Minister Malcolm Turnbull has pledged $1 billion in upgrades to Queensland's M1 motorway and asked the state government to match his offer.

CURRENT AND PLANNED UPGRADES TO QUEENSLAND'S M1 MOTORWAY

* September 2016 - Infrastructure Australia adds upgrades to the M1 and Bruce Highway to its priority list.

* March 2017 - The Queensland and federal governments agree to a $500 million deal to widen the M1 between Mudgeeraba and Varsity Lakes to six lanes and upgrade the Gateway Motorway merge at Eight Mile Plains.

* October 2017 - Construction begins on the Gateway Motorway merge, a major bottleneck on the way from Brisbane to Gold Coast, and the Mudgeeraba to Varsity Lakes section.

* April 2018 - Prime Minister Malcolm Turnbull commits $1 billion to widen the motorway to six lanes between Varsity Lakes and Tugun and to eight lanes between Eight Mile Plains and Daisy Hill, while extending the busway to Springwood.