An upgrade for Wynnum road from four lanes to six lanes between the Story Bridge and Canning Bridge is scheduled to be finished in 2020.
Although the upgrade is designed to ease congestion, there have been concerns raised over the Canning Bridge section of the road, where motorists will be reduced back to four lanes and traffic could build.
Brisbane Deputy Mayor Adrian Schrinner says due to its heritage listing, Canning Bridge is unable to be extended in the same way without creating a second bridge, which the Brisbane City Council does not currently have the funding to achieve.