Mooloolah River Interchange capacity and safety

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Mooloolah River Interchange capacity and safety

Traffic demand during peak period
Early-stage proposal (Stage 1)
Sunshine Coast, Queensland
Smaller cities and regional centres
Regional Connectivity
Problem/Opportunity timeframe
Near term (0-5 years)
Proposed By
Queensland Government
Date added to the IPL
07 April 2020
graphic of a map


The Sunshine Motorway, Brisbane Road and Nicklin Way intersect at the Mooloolah River Interchange, connecting major employment, residential and commercial precincts on the Sunshine Coast.

Traffic demand is exceeding the capacity of the interchange and surrounding road network during peak periods. 

This congestion is exacerbated by the configuration of the interchange, which causes some drivers to weave across multiple lanes or take less direct routes to reach their destination.

The configuration and growing number of vehicles using the interchange is reducing average peak period speeds, which were modelled at approximately 36 km/h in 2019, compared with free-flow speeds of approximately 73 km/h. Between 2014 and 2018, 89 incidents were recorded at the intersection and access roads, including one fatality and 33 hospitalisations. 

The 2019 Australian Infrastructure Audit estimated that the population of the Sunshine Coast would grow by around 120,000 people between 2016 and 2031, or 33% of its current population.


The proposal aims to improve the capacity and safety of the Mooloolah River Interchange, potentially through upgrading the access roads, entry/exit ramps and the configuration of the interchange. It could also include new road links or changes to local roads and the local public transport network if there is sufficient demand.

Next steps

Proponent to develop potential investment options (Stage 2 of Infrastructure Australia’s Assessment Framework).