Thomas & Hutton provided design and engineering services for a single-lane roundabout with curb and gutter designed as an intersection improvement at CR 3266/Bell Road and CR 72/Boles Road to reduce congestion caused by the southbound left and right-turn movements from Bell Road. The intersection consisted of a T-intersection at Bell Road to the north with southbound traffic terminating at a stop condition. Bell Road and Boles Road are 2-lane facilities with no turn lanes at the intersection with narrow shoulders. The roundabout would allow traffic from each direction to flow through the intersection more freely and safely. The roundabout consists of a 3-leg single-lane roundabout with flares extending along each leg from the center of the intersection.
Bell Road consists of two 11-foot lanes, a 10-foot urban shoulder with a 5-foot sidewalk on the west side, and a 10-foot multi-use trail on the east side. Boles/Bell Road consists of two 11-foot lanes, a 10-foot urban shoulder with a 5-foot sidewalk on the north side, and a 10-foot multi-use trail on the south side. The roundabout will have a center island with a concrete apron to accommodate large trucks. Traffic was maintained during construction. The project is funded with Federal funds and is following the National Environmental Policy Act process for environmental documentation. The project is being administered by GA Dept of Transportation (GDOT) so the GDOT Plan Development Process (PDP) is being followed through the design process. The roundabout reduced the number and severity of accidents, allowed for greater traffic flow than the previous configuration, and provided sidewalks at the intersection.