Five Cairns Infrastructure Projects Cost $84.3 Million to $535 Million

The largest infrastructure project under way in Cairns is the $325.5 million Cairns Water Security Stage 1 drinking water supply, with the contract awarded to John Holland Qld.

These figures come from project lists maintained by Cairns Regional Council and state agencies. They show the scale of spending on water, roads, health and marine facilities at a time when the city is managing population growth and supply needs. The projects appear in official pipelines that list contract values, government contributions and completion stages.

Road and highway upgrades

The $535 million Bruce Highway, Cairns Southern Access Stage 3 between Edmonton and Gordonvale is nearing completion, with the Australian Government contributing $428 million. A separate $300 million project is duplicating the Cairns Western Arterial Road between Redlynch and Captain Cook Highway to a four-lane dual carriageway. These two road schemes together account for $835 million in committed spending.

Both projects are listed in state and federal infrastructure documents that record the precise dollar amounts and the sections of road involved. The Bruce Highway work forms part of a longer corridor upgrade that has been tracked through annual budget papers.

Health and marine facilities

At Cairns Hospital, a $171 million Tranche 1 expansion is adding 64 beds. The new $84.3 million Mental Health Inpatient Service building opened in February 2025. In the marine sector, the $180 million Cairns Marine Precinct is on track to begin construction and will include a 5,000-tonne ship-lift and three ship hardstand areas.

These amounts and the February 2025 opening date are stated in Queensland government project summaries and hospital infrastructure updates. The ship-lift capacity and hardstand numbers appear in the same marine precinct documentation.

Funding for the projects has already been allocated through existing contracts and budget lines. Construction on the water supply, hospital expansion and arterial road duplication continues under the awarded contracts, while the Bruce Highway section moves toward final handover and the marine precinct advances through pre-construction approvals.