Demolition of the Isa St Bridge will start in the coming weeks with the bridge closed to traffic until October or November.
Council says most of the construction work for the upgrade and bridge-replacement project will be done by local contractors, in a $7.5m project with $2.24m from the Federal Government's Bridges Renewal Program and $635,000 from the State Government's Transport Infrastructure Development Scheme and Council providing the $4.5m balance.
Deputy Mayor Phil Barwick said the bridge was deteriorating, and the new structure would have a higher flood immunity and increase carrying capacity from the existing five tonnes to be capable of carrying a loaded semi.
"The new bridge will be a real asset to the community and will significantly improve the local amenity," Cr Barwick said.
At Friday's special meeting, Council awarded Gold Coast-based Davbridge Constructions the $2.4m contract to build the new bridge.
Cr Barwick said the decision followed a stringent process undertaken by design engineers GHD.
"It is our firm view that this company offers the best value for ratepayers and residents, given their vast experience and qualifications," he said. "Approximately 80 percent of the construction work - including earthworks, demolition, plant hire and concreting - for the entire project itself will be completed by local contractors."
Cr Barwick said no tenderer provided 100 percent local content. "We put out a tender for the bridge-construction part of the project due to the high-risk nature of the bridge design and the specialist requirements of the work itself," he said.
"The bridge construction forms just one part of this $7.5 million project."
Council said local business Remploy will carry out demolition work of the existing bridge beginning mid-May and will take two weeks to complete.
The upgrade will also increase the height of the embankments, to level out the eastern and western approaches of the bridge, and involve the construction of a roundabout on the intersection of Fourth Avenue and Isa Street, to replace the existing traffic lights.
The roundabout will enable right-hand turns onto Fourth Avenue.