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1-75@ CR 7958/WindyHill Road- Diverging Diamond Interchange

Report Number
8827
Year of Publication
2014
Abstract

The proposed project would convert the existing interchange from a partial cloverleaf to a diverging diamond interchange (DDI). The traffic on Windy Hill Road would cross from the right side of the roadway to the left side at a signalized ramp intersection, which would allow left-turning vehicles to flow freely onto the interstate at the on-ramp. Windy Hill Road through traffic is then crossed back to the right side of the road at the second signalized ramp intersection. The Windy Hill Road Bridge over 1-75 would not be widened but reconfigured to have six lanes (three in each direction) and a 14-foot median. Pedestrian traffic would be facilitated along the center median of the bridge. Sidewalks are provided on both sides of Windy Hill Road outside the DDI intersections. The project would also include the relocation of the intersection of Windy Hill Road at Circle 75 Parkway, approximately 100 feet west of its existing location and Windy Hill Road at Leland Drive, approximately 220 feet east of its existing location. The southbound off and on-ramps from 1-75 would be reconstructed from their existing condition to a standard diamond configuration to accommodate the DDI design. However, the southbound off-ramp would be split to allow traffic to travel across Windy Hill Road onto Circle 75 Parkway or tum right onto Windy Hill Road onto Circle 75 Parkway or tum right onto Windy Hill Road west. All work on the ramps would be tied in to the existing roadway before the merge/diverge points with 1-75. No work would take place on the interstate.