Columbus Council voted Tuesday to authorize the city to go forward with a plan to build a large roundabout at the intersection of River Road, Bradley Park Drive, Green Island Drive and Cascade Road.
The intersection had been slated for a traditional upgrade with additional turning lanes to relieve traffic clogs that occur there. But residents approached Councilor Glenn Davis, who represents the area, with a request to take the roundabout approach.
The traditional makeover had been approved and almost $1 million allocated for the project. About $158,000 had been spent for design work, which will be of little use in the new project.
The roundabout will cost considerably more than the initial plan, between $1.75 million and $2.25 million, according to Deputy City Manager David Arrington, who brought the proposal before council Tuesday. It will also require about $154,000 in additional design work.
The increased costs are due to the increased amount of asphalt and concrete work, more right of way acquisition, grading, retaining walls and landscaping, Arrington said.
Several councilors expressed concerns over the increased cost and the fact that a funding source for the increase was not part of the presentation.
Arrington said there are state funds available every year for projects such as this one and he felt confident the city could use those funds, as it did this year on improvements on South Lumpkin Road.
Arrington said the redesigning and right of way acquisition should take six to nine months and, once the funding is in hand construction could begin in 12-15 months.