GDOT: SR 400 Express Lanes Project Construction to Begin in Forsyth County

The Georgia Department of Transportation (GDOT) has announced that heavy construction activities for the SR 400 Express Lanes project are expected to begin in April 2026, including portions within Forsyth County.

According to GDOT, initial construction in Forsyth County will take place along SR 400 between McGinnis Ferry Road (future Exit 11B) and McFarland Parkway (Exit 12).

As construction begins and ramps up, GDOT advises that residents, commuters and community partners can expect to see increased activity in the corridor, including:

• Construction equipment mobilizing
• Work zones being established
• Phased traffic shifts
• Increased field activity as contractors begin heavy construction

This work is part of a larger 16-mile project corridor, with construction occurring in segments over time (see chart from GDOT below).

GDOT will continue to provide updates to help residents and motorists plan ahead as the project progresses. Residents are encouraged to stay alert when traveling through work zones and to plan for potential changes in traffic patterns as construction begins.

For additional updates on the SR 400 Express Lanes project, visit GDOT's project page at https://www.400expresslanes.com or sign up for traffic impact alerts and the project newsletter here.

Related Articles

• Dogs Removed from Residence in Forsyth County to be Available for Adoption at Forsyth County Animal Shelter Beginning April 2

  Dogs Removed from Residence in Forsyth County to be Available for Adoption at Forsyth County Animal Shelter Beginning April 2

• ICE STORM: Information and Updates | Jan. 24

  Get updates on the potential Jan. 2026 ice storm.

• 2015 Forsyth County Annual Report and 2015 Forsyth County Fire Department Annual Report Now Available

  2015 Forsyth County Annual Report and 2015 Forsyth County Fire Department Annual Report Now Available

• Forsyth County Administration Offices Have Moved - What to Know

  The Forsyth County Administration Building (formerly 110 E. Main Street) has moved to the new Freedom Park campus (2435 Freedom Parkway) effective March 30, 2026.

• Forsyth County EMA and 911 Center Launch Official Facebook Page

  Forsyth County Emergency Management Agency (EMA) and 911 Center now have a Facebook profile.

• New Forsyth County Fire Station 6 Now Open in Southern Forsyth County

  New Forsyth County Fire Station 6 Now Open in Southern Forsyth County