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State Route 400 (SR 400) is a vital north-south transportation corridor in metro Atlanta that connects people, jobs, and freight. To improve mobility, Georgia DOT plans to add new, optional express lanes from North Springs MARTA Station to McFarland Parkway.

 Meeting Schedule

Georgia DOT will hold a series of Public Information Open Houses for the proposed express lanes project. The purpose is to provide the public with opportunities to learn more about the project, ask questions, and provide feedback.

2/28/201911:00 AM - 2:00 PM & 4:30 PM -7:30 PM.Hilton Garden Inn Atlanta North/Alpharetta - 4025 Windward Plaza Alpharetta, GA 30005
3/5/20194:30 PM - 7:30 PMForsyth Conference Center - 3410 Ronald Reagan Blvd Cumming, GA 30041
3/7/20194:30 PM - 7:30 PMDoubleTree by Hilton Hotel Atlanta: Roswell - 1075 Holcomb Bridge Rd Roswell, GA 30076
3/12/20194:30 PM - 7:30 PMCity Springs - 1 Galambos Way Sandy Springs, GA 30328

 Project Map

 5 Things You Need to Know

  1. Adds new lane miles in metro Atlanta
  2. The express lanes will be constructed in addition to the existing general purpose lanes
  3. Projected to reduce delay by 19,000+ hours each day in the SR 400 corridor by 2030
  4. Provides more reliable trip times and free access for transit and vanpools
  5. One of the initial 11 large-scale Major Mobility Investment Program projects to improve transportation in Georgia’s metro areas

 Project Status - Timeline

Georgia DOT is currently conducting environmental studies, which will continue through 2020. The project team will evaluate the construction of express lanes along SR 400 and anticipate holding a series of Public Information Open Houses (PIOHs) in early 2019. Construction is currently scheduled to begin in 2021 with the express lanes opening to traffic in 2024.


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 Major Mobility Investment Program (MMIP)

The project is part of Georgia DOT’s Major Mobility Investment Program, which currently includes an initial 11 large-scale projects that will build a better Georgia by enhancing mobility and safety, fueling economic growth, and improving Georgians’ quality of life.

View MMIP Webpage


For more information about this project please contact the following:

Email & Phone

Email (sign up for updates)
(404) 556-9816 (voicemail)

Mailing Address

Georgia DOT - One Georgia Center
600 West Peachtree Street, Atlanta, GA 30308

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 ‭(Hidden)‬ Announcements

SR 400 Express Lanes​​​​​​

Fact Sheet

Details about the SR 400 Express Lanes project.

View Fact Sheet​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​