This project will improve safety, reduce congestion and replace the aging infrastructure which dates to the 1950's.

Building demolitions began in mid-August 2007. Construction began in November 2007 and will continue through October 2011.

A number of commercial and residential buildings will be demolished in the vicinity of the existing Main Street interchange. There is one building in the Dayton Metropolitan Housing Authority (DMHA) Parkside Homes complex that will be removed to accommodate the new southbound interstate exit ramps. The old Reynolds & Reynolds building will be demolished for a future phase of the interstate reconstruction. The anticipated completion date is Decemember 2007.

The project runs from Riverview Avenue to the south and Leo Street to the north. Improvements will also be made on Main Street between Great Miami Blvd. and Babbit Street. 

The posted speed limit will be 55 mph through downtown Dayton.

The current existing number of travel lanes will be maintained during construction with a minimum of two lanes in each direction.

Three "through" lanes will be available in each direction on I-75 upon completion of this project.

No, several ramps will close permanently including all ramps at Grand Avenue, Keowee Street, Leo Street, Riverside Drive and Neva Drive. These ramp closures will occur at various stages of the project. Access to Main Street will be maintained at all times.

A "softer" northbound curve will be provided in the State Route 4 interchange. The speed limit will be 55 mph.