Public Works

Tilly Mill Road at North Peachtree Road

The intersection at Tilly Mill Road and North Peachtree Road will be the first intersection improvement to be designed and constructed as a result of the city’s Comprehensive Transportation Plan.  It was determined to be a high priority based on community input and the existing poor level of service. 

This intersection and surrounding area manages traffic from five arterial and collector roads of Dunwoody, providing access to and from neighborhoods and destinations such as Georgia Perimeter College and several area public schools.  As a result of these high volumes and known traffic patterns, the intersection of North Peachtree with Peeler Road will also be incorporated into this project with the addition of a traffic signal that will be synchronized with the existing signal at Tilly Mill and North Peachtree.  The improvements to this intersection will reduce the average wait time experienced at these duel intersections.

Design elements such as new sidewalks and bike lanes, additional turn lanes, and pedestrian refuge islands will all improve the safety and flow of these two related intersections.  Aesthetically pleasing traffic signal mast arms will replace the existing strung signal heads, enhancing the character of this area of Dunwoody. 

The construction scope also includes  improvements to existing stormwater infrastructure such as pipes and detention facilities to improve downstream conditions.  Relocation of existing utility infrastructure, including the replacement of DeKalb County's water main through this intersection will also be incorporated into this construction.   These activities require tree removal outside of the construction limits outside of the roadway improvements.  The city will replace trees per its No Net Loss of Trees policy.

Current Project Phase – Construction

The city has awarded this contract to C.W. Matthews.  Utility work has begun with roadway construction beginning soon afterwards.  To receive email updates on this project, send an email to with "Tilly Mill Rd @ N. Peachtree Rd" in the subject line.  



Lane Closures Friday Jan. 27 to Sunday January 29

The City of Dunwoody will conduct upgrades on Tilly Mill Road from Friday January 27, 2017 until Sunday January 29, 2017. Please use alternate routes and try to avoid the area during this period.

The construction upgrades require the closure of travel lanes beginning at the intersection of North Peachtree Road at Tilly Mill Road and extending east to the intersection of Peeler Road at Tilly Mill Road. 

The lane closure will begin at 8:00 p.m. Friday night (1/27) and end by Sunday (1/29) at noon (12:00 p.m.) 

In lieu of a complete detour, construction crews have adjusted work on this section of Tilly Mill Road to restrictive travel through the area and will only allow access for one travel lane during the Friday to Sunday construction period. The lane closure will be continually monitored and properly flagged and will shift traffic from one side of the road to other to facilitate road work and installation requirements. All work and lane closure activities will be dependent on weather conditions during the construction period.

The lane closures will permit work crews to replace and install a major portion of storm drain pipe. This work is critical to help safely and securely install the new pipe adjacent to and above several major utility lines which serve homeowners and residents at the Assisted Living Facility on Tilly Mill Road. While the lane closures will be a temporary inconvenience, it is needed to ensure the proper installation of the storm drain pipe and the safety of the construction crew(s). The lane closures also ensure residents in the direct area/path of the work will have access to and from homes and driveways as needed. Crews will be on hand throughout construction to offer assistance and guidance on entering and exiting properties within the construction zone.

The affected intersections will be clearly marked with flag crews and signs throughout the construction work period. 

If you have any concerns or questions, please feel free to contact the City of Dunwoody Project Team via email at or by phone 678-382-6850.



The construction project is expected to take approximately 16 months to fully complete. Weather permitting, the project is expected to be finished by Spring 2017.

Construction crews are continuing work in the intersection area and general preparations for grading and milling of the road surfaces are underway. Critical storm pipe installation was recently completed and road widening within the boundaries of the project area is expected to continue over the next several weeks.

Drivers can expect temporary delays and the potential for periodic closure of one lane as flag crews help direct traffic around ongoing work. 

Unless otherwise specified, potential periodic lane closures on weekdays will be permitted to occur only between the hours of 9:00 a.m. and 3:00 p.m. Traffic flows in the area will be monitored to properly address any potential delays during this time period.

As with many construction projects, work is ultimately dependent upon the weather. 


The majority of the new stormwater detention pond, located behind the Summer’s Landing facility, is nearing completion and will improve downstream stormwater conditions. 

Utility relocations are nearing completion and crews continue their onsite relocation efforts to move existing utilities out of the footprint of the proposed lanes. Different utility companies have overhead and underground facilities within the intersection which service Dunwoody residents and the relocation of these utilities must be carefully orchestrated to maintain these services.


Construction Management