Mr Mumford said construction of the $1.5bn Stage 3, between Broadbeach and Burleigh Heads, was on track for completion in mid-2026.
"More than 45.5km worth of utilities have been upgraded and relocated from Broadbeach to Burleigh and more than 4km of rail or 60 per cent of the total has been installed," he said.
"Right now, there are 1,200 workers on site delivering this $1.5B project, with 80 active work fronts and 75 crews in place."
"We look forward to Stage 3 opening for passengers by the middle of next year."