Southbound Exit 5 on GA-400 will close later this summer, cutting off the current ramp to North Springs MARTA, Abernathy Road, and Hammond Drive for commuters on a corridor that carries more than 250,000 vehicles daily, according to GDOT traffic data.
The Georgia Department of Transportation announced the closure in its July 2026 SR 400 Express Lanes newsletter, published Thursday, July 23. An exact date has not been set. GDOT said commuters should watch for timing details "in the coming weeks."
Tree clearing will also resume across six sections of the highway in early August as the multi-year widening project enters a new construction phase.
Two temporary exits will replace the ramp
When Exit 5 closes, two new temporary ramps will open simultaneously:
- Exit 5A — Abernathy Road and Hammond Drive, about one mile south of the current Exit 5.
- Exit 5B — North Springs MARTA station only (transit-only exit), about half a mile south of the current ramp.
GDOT said it will announce the closure date in the coming weeks. The agency advises commuters to monitor its newsletter and the Peach State Partners website for updates.
What's happening in Roswell right now
GDOT and its contractor, Peach State Partners, divided the 16-mile corridor into three segments. Segment B runs from Roberts Drive in north Sandy Springs through Roswell to Kimball Bridge Road in Alpharetta.
Along Segment B, crews are installing new pavement markings and temporary concrete barriers between Riverside Road and Holcomb Bridge Road (Exit 7), and between Mansell Road (Exit 8) and Haynes Bridge Road (Exit 9). Drainage work at Holcomb Bridge Road will stay outside active travel lanes but within the right-of-way, according to the newsletter.
Motorists may notice minor shoulder reductions through early August as crews restripe lanes for upcoming traffic shifts.
Bigger picture
The SR 400 Express Lanes project is a $4.6 billion design-build effort, part of a broader $12.4 billion public-private partnership between GDOT, the State Road and Tollway Authority, and SR 400 Peach Partners LLC, according to the U.S. Department of Transportation. The $4.6 billion covers design and construction; the larger figure includes financing, operations, and maintenance over a 56-year concession. The City of Roswell contributed $15 million to the financing package.
The project will add tolled express lanes in both directions along 16 miles, from the North Springs MARTA station to McGinnis Ferry Road. Completion is targeted for spring 2031.
Most lane closures so far have been limited to overnight hours, between 9 p.m. and 5 a.m. GDOT advises drivers heading into August and the new school year to expect delays, slow down in work zones, and stay alert.
Construction updates are posted at sr400peachpartners.com and through GDOT's SR 400 Express Lanes newsletter.
