SR 316 Interchange

SR 316 Interchange Project Site

On November 15, 2011 Georgia DOT began a 2.2 mile project to extend limited access along SR 316 in Gwinnett County. Crews will reconstruct the first two signalized intersections (Collins Hill Road and State Route 20) into one interchange serving both roads.

Project Information

Current Status

Bridge to take Collins Hill Road over SR 316 is under construction now. The vertical support columns and horizontal bridge beams are in place. Crews poured the first section of the bridge deck or driving surface April 1, 2013. It will take 3 more concrete pours to complete the driving surface.

Crews are excavating dirt on State Route 316 at SR 20. The grade of SR 316 must be lowered by 20 feet. The new bridge that will take SR 20 over SR 316 has just started. Crews are digging down to create the space for the concrete columns that will support the bridge. Rock is in the area so the digging is slow. The bridge has 6 columns. Once the concrete columns are in place, the horizontal bridge beams can be set. There are 16 beams in this bridge. Next steel plates will be welded in place between the beams creating one structure from the vertical columns and horizontal beams.

Project Details

This project will improve safety and efficiency by separating opposing traffic with an interchange and improve capacity by extending limited access east of SR 20

Project includes two new bridges; Collins Hill Road and SR 20 over SR 316
Ramps will allow motorists to reach Collins Hill Road or SR 20
Seven traffic signals (five new signals). Signals will be interconnected for corridor synchronization
- Entrance and exit ramps from SR 316 to Collins Hill Road
- Entrance and exit ramps from SR 316 to SR 20
- Collins Industrial Way/Lendon Lane Connector at Collins Hill Road
- Collins Business Drive at Collins Hill Road
- Reynolds Road Extension at SR 20

Impact on Travel

View Lane Closure Hours Schedule

Utility relocation is underway
Grading is underway

Contract Information

Estimated Construction Cost:	$37.4 million
Contract Awarded to:	G.P.’S Enterprises Incorporated of Auburn, Georgia
Contract Completion Date:	12/31/14 (Roadwork) and 5/31/16 (Vegetation)