Queensland transport minister Mark Bailey said the Port's Wharf Five boasted a $4 million western approach deck.

"Not only has this $4 million project seen a new deck delivered, we've supported good local jobs and supply chains throughout construction," he said.

"Having infrastructure of this calibre at our state-owned ports means we can expand into new industries and capitalise on the investment made in renewables throughout the region."

NQBP chief executive officer Nicolas Fertin said the works were part of a number of infrastructure upgrades at the port.

"Over the past 18 months we've invested $1.8 million to expand cargo capacity at Wharf Four, $2.5 million to extend Wharf One and recently completed our new $8.5 million tug berth facility, all aimed at supporting growth and diversified trade," he said.

"The Port of Mackay is an essential gateway linking Central Queensland to the world, servicing mining and agricultural industries and supporting 2100 trade jobs with goods to the value of around $4.9 billion passing through the port.

"We are dedicated to supporting our local economy and workforce and are pleased we were able to achieve this during the Wharf Five project with our principal contractors V2R Projects.

"A total of 62 people, based either in Mackay or Queensland worked more than 7000 hours on the project to get the job done."

Member for Mackay Julieanne Gilbert said opportunities in Mackay were booming.

"You only need to take a drive around our growing region to see the investment being made in our region," she said.

V2R projects director Paul Chambers said the company had valued working with NQBP on the project, which resulted in an important piece of infrastructure for the region.

"Our site-based team are all local Mackay residents and all took pride in the delivery of infrastructure that will support their local community and economy," he said.

"The project also was delivered with zero harm to anyone on the project."