Public Works

Mount Vernon Road at Tilly Mill Road

Future Intersection Improvement Project

This intersection has been identified in the City of Dunwoody’s Comprehensive Transportation Plan as a high priority project due to its current poor safety and low level of service.  This intersection and the surrounding corridors lack adequate turn lanes along Mount Vernon and have limited accommodation for non-motorized users.  The goal of this project is to correct these deficiencies and improve the safety and operations of this intersection.

Concepts have been developed for the Mount Vernon Road at Tilly Mill Road and Tilly Mill Road at Mount Vernon Place intersections as well as for the segment between these two intersections. These proposed projects may be advanced as separate projects or incorporated into a single project.


Project Descriptions

Mount Vernon Road at Tilly Mill Road

A concept presented for this intersection and the surrounding corridor includes the addition of left turn lanes on Mount Vernon Road at Tilly Mill Road and at other adjacent intersecting roads. These modifications will improve the level of service and reduce rear end collisions along the corridor by providing turning vehicles a place of refuge. It will also reduce the number of angle collisions at Tilly Mill Road by enforcing proper lane assignments though the intersection. The concept also provides for improved pedestrian crossings as well as bike lanes and sidewalks on both sides of the roadway.  An updated concept has been developed that holds the edge of the road on the south side and widens to the north side of the road.

Tilly Mill Road at Mount Vernon Place

The concept presented for this intersection realigns Mount Vernon Place at Tilly Mill Road. This new alignment of Mount Vernon Place would make it more clear to drivers who has the right of way when approaching the intersection and will improve the lines of sight for a stopped vehicle using this intersection. This concept leverages the city owned property to the north of the intersection and provides an opportunity for additional greenspace within the remnant of the existing right of way.  An updated concept provides a left turn lane from Tilly Mill Road onto Mount Vernon Road.

Tilly Mill Corridor (Mount Vernon Road to Mount Vernon Place)

Suggested improvements to the connecting Tilly Mill Road Corridor include adding curb and gutter on the west side of the road for stormwater management and to improve the aesthetics. The position of the curb and gutter is ultimately dependent upon the type of bicycle and pedestrian accommodation desired by the community. Two concepts are presented: Concept A provides for sidewalks and bike facilities within the roadway; Concept B provides for a multi-use facility on the west side of the road.

Next Steps
Approved concepts have been developed for the two intersections, with final design scheduled to begin in 2019. The project is not currently funded for construction.

Public Works