The city is in the planning and design stage of how to improve the intersection at Mount Vernon and Tilly Milly roads and is seeking public input.

Residents have long complained about the confusion at the intersection. A 2011 comprehensive city transportation plan marked it as high priority because of poor safety.

A Google Earth image of the intersection of Mount Vernon and Tilly Mill roads in Dunwoody.

Public Works Director Michael Smith said the city has funded concept work for the project and a lot more work needs to be done with the design, which includes a possible left-turn lane on Mount Vernon Road, bike lanes, multi-use paths and sidewalks.

“We’re still very early in the project,” Smith said. “Construction is at least five years out.”

The estimated cost is $1.6 million.

The concept plan presented at an Aug. 16 public meeting includes adding 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,” states a city memo on the project.

“It will also reduce the number of angle collisions at Tilly Mill Road by enforcing proper lane assignments through the intersection. The concept also provides for improved pedestrian crossings as well as bike lanes and sidewalks on both sides of the roadway,” the memo states.

This intersection is confusing for drivers who have the right of way, and the biggest concern is for motorists coming west on Mount Vernon Road with no turn lane, Smith said.

“A little of the lane goes into a neighborhood [Wellesley Trace], so they kind of use it to go around” other cars at the stop light, Smith said.

Adding a left turn lane on Mount Vernon Road would likely make the intersection safer, Smith said.

The city is also looking to realign the intersection at Tilly Milly Road and Mount Vernon Place to make it more clear to motorists who has the right of way when approaching the intersection. This will also improve the line of sight for a stopped vehicle using the intersection, a city memo states.

Cost for this project is estimated at $500,000.

A plan estimated to cost $300,000 suggests improvements to the connecting Tilly Mill corridor, including adding curb and gutter on the west side of the road for stormwater management and improving the aesthetics, according to city documents.

“The position of the curb and gutter is ultimately dependent upon the type of bicycle and pedestrian accommodation desired by the community,” states a memo.

Smith said the concepts may be presented to the City Council this fall.