Major construction on the State Route 400 Express Lanes Project will begin in April 2026 under a partnership between the Georgia Department of Transportation (GDOT) and SR 400 Peach Partners LLC.
The project, the largest transportation infrastructure effort in Georgia's history, is aimed at improving long-term mobility along the SR 400 corridor in Fulton and Forsyth counties.
Construction equipment is mobilizing, work zones are being established and phased traffic shifts are under way as crews start foundational work supporting the future express lanes. Early activities include new bridge construction and upgrades to existing interchanges. All construction is currently expected to be completed by 2031.
Project Scope
The SR 400 Express Lanes Project will add optional tolled express lanes along approximately 16 mi. of SR 400 from the North Springs MARTA Station to just north of McFarland Parkway. Construction includes two express lanes in each direction between North Springs and McGinnis Ferry Road and one express lane in each direction from McGinnis Ferry Road to McFarland Parkway.
The project also includes Express Lanes Transit infrastructure to support MARTA's future Bus Rapid Transit service. BRT service will begin at the North Springs MARTA Station with stations planned at Holcomb Bridge Road, North Point Mall and the Windward Park and Ride.
Once complete, the SR 400 Express Lanes will be part of the Georgia Express Lanes Network.
The project is being delivered as a public-private partnership, with SR 400 Peach Partners responsible for design, construction, operations and long-term maintenance under an approximately 56-year agreement. State officials said the delivery model limits public funding needs while accelerating construction and long-term performance.
