A new four-lane road will be built through one of Brisbane’s fastest-growing southern suburbs at a cost of more than $47m.

A new 700-metre extension of Gardner Road in Rochedale – between Priestdale Road and Underwood Road – will include a new bridge with a wildlife crossing over the Bulimba Creek East Tributary, 2.5km of on-road bike lanes, 1.1km of shared paths and new footpaths.

There will also be two new intersections with traffic lights and pedestrian crossings, including one at School Rd and Priestdale Rd.

The new connection aims to provide easier access to Rochedale State High School and the Rochedale Bus Station and Park ‘n’ Ride.

School access will be maintained throughout construction, with the design also providing an additional left-turn exit onto Gardner Rd.

The road will run behind the Brisbane Gateway Resort tourist park.

Planning and design has progressed for the project, with Brisbane City Council now seeking a construction partner to deliver it.

The state government has committed $47 million towards the project through the Residential Activation Fund.

Subject to the tender process, the final cost will be determined and construction is expected to begin next year.

Between 2016 and 2021, Rochedale’s population more than doubled from 3,000 to nearly 8000.

Lord Mayor Adrian Schrinner said the new road would help unlock hundreds of new homes

“Rochedale has grown rapidly and better roads and more homes go hand-in-hand as we plan for the future,” he said.

“Gardner Road shows what’s possible when all levels of government work together and we want to see more partnerships like this to deliver the infrastructure our growing city needs.”

Councillor Steven Huang said Rochedale has changed significantly in recent years, and the new road would provide better local connections for the growing community’s needs.

“This new connection will help take the pressure off surrounding roads and make it easier to get to school, work, local shops and public transport,” he said.

“I know local residents will be as excited as I am that we’re taking the next major step towards delivering it for our community.”