Building a Better Commute
Your guide to navigating projects and construction in Perimeter.
Keep a pulse on major transportation projects currently underway in Perimeter.
Keep a pulse on major transportation projects currently underway in Perimeter.
Transform 285 / 400 Project 285 Lane Reductions

Transform 285 / 400 Project

More Information:
GDOT maintains a project website here.
Most Recent Update:
Abernathy Road Diverging Diamond Interchange (DDI)

Most Recent Update:
November 7, 2021
Transform 285 @ 400 Lane Closure Advisory // November 5 – November 15
Peachtree Dunwoody Road & 285 Bridge Replacement


More Information:
Glenridge Drive & I-285 Bridge Replacement


Mt. Vernon Highway Bridge Replacement

More Information:
Most Recent Update:
Road Closure: Mount Vernon Highway between Barfield Road and Peachtree Dunwoody Road // Friday, July 6, 2018 to Saturday, July 7, 2018
GA-400 Express Lanes


More project information available here.
Path 400 Extension South from Glenridge to Buckhead

TBD
More Information:
285 Merged Lanes (Express Lane)

2022 – 2032
TBD – Project in conception phase.
The project will add two new at-grade, elevated, and barrier-separated express lanes in both directions on I-285 between Paces Ferry Rd and SR 400 westbound, between Henderson Rd and SR 400, and north on SR 400 from the Glenridge Connector to the North Springs MARTA station.
Additional information is available here.
SR 400 Northbound Shared-Use Path

TBD
TBD
More Information:
The Transform 285/400 Improvement Project will add nearly one mile of a shared-use path to the Perimeter area. The shared-use path will accommodate both bicyclists and pedestrians and will run along SR 400 northbound, with access points at Johnson Ferry Road and Peachtree Dunwoody Road.
I-285 Top End Express Lanes

TBD
The proposed project would construct new, barrier-separated express lanes in both directions on I-285 from just south of Paces Ferry Road in Cobb County to Henderson Road in DeKalb County, and along SR 400 from the Glenridge Connector to the North Springs MARTA Station. The proposed express lanes would improve mobility and travel-time reliability along the Top End for drivers and improve connections between regional destinations through express lanes that integrate with the greater metro Atlanta express lanes network.
Click here for the I-285 Top End Express Lanes Toolkit.