An Official Site
Skip Ribbon Commands
Skip to main content
Sign In

 Why is this project necessary?


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


 When will the project start?


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


 What structures are being demolished to enable expansion of the interstate?


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.


 What are the project limits for the first phase of the I-75 modernization through downtown Dayton?


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. 


 What will the new speed limit be on the interstate?


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


 How many lanes will be available for travel during construction?


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


 How many lanes will be available after the project is complete?


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


 Will all ramps be accessible during the 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.


 What happens to the sharp northbound curve on I-75 at the State Route 4 interchange?


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


 Contact Information


Any questions or concerns reguarding the I-75 Modernization
Please contact the Public Information Officer
(937) 497-6820
The Ohio Department of Transportation: Improving for Today… Connecting to Tomorrow