Once installed, the new single span bridge constructed by JC Butko Engineering will be shared by cyclists and pedestrians as part of the Newcastle Inner City Bypass Project.

Weighing about 40 tonnes, the structure will require a 400 tonne crane to lift it on to its pre-constructed concrete piers.

It is fully welded, with a painted finish, aluminium decorative baluster panels and stainless steel safety mesh.

And it represents nearly a year of planning, preparation and fabrication by the Border team behind its creation.

JC Butko Engineering senior project manager Shane Giddens said the company was awarded the Transport for NSW project late last year.

Assembly began "in earnest" in early April after a great deal of preliminary work.

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At times more than 10 people worked on the bridge, with this period coinciding with the COVID-19 lockdowns and border closure.

"We were doing 12 hour days," Mr Giddens said.

"We had to reduce our hours because of COVID because a lot of the boys were coming across the border."

JC Butko Engineering commercial manager Paul Butko said the group had to adapt quickly to an ever-changing environment.

"The team has done a tremendous job in delivering a complicated project in challenging circumstances," he said.

A Transport for NSW spokeswoman said the JC Butko Engineering truss was due to arrive in Newcastle this morning before being installed on Saturday night.

Construction of the shared path bridge is initial work for the next stage of the main bypass, a 3.4 kilometre Rankin Park to Jesmond section that will complete the north-south connection.

"The bridge is expected to improve traffic flow on Newcastle Road when it opens to pedestrian and cycle traffic early next year," she said.

Included in the Border company's work is the installation of about 240 posts and decorative aluminium panels to access ramps and stairs with a fully continuous stainless steel hand railing.

Mr Giddens said the bridge was one of the biggest pieces of infrastructure JC Butko Engineering had fabricated as a single unit.

It was loaded onto a Rex Andrews truck on Tuesday before leaving Albury-Wodonga about 5.20am Wednesday.

Mr Giddens said the exit went as planned, with no hiccups.

"It took most of the day to make sure it was loaded correctly in accordance with all the paperwork," he said.

"Like most big projects when you work on it for so long, you're happy to see the end of them.

"It is a sigh of relief, that's for sure."