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Modernization of Interstate 75


The Reconstruction of Interstate 75 (I-75) is one of the highest priorities undertaken by the Ohio Department of Transportation (ODOT) and Miami Valley Regional Planning Commission (MVRPC). Collectively, both agencies have defined effective and feasible solutions to a section of this major corridor in the Dayton area that will meet the needs of the motoring public now and into the future. Extensive public involvement, including neighborhood groups, economic development members, and technical groups have been participants in selecting solutions for this project.

As the current interstate system exists through the Dayton area, it is heavily congested, confusing to motorists, and has a high accident rate. Several left-hand entrance and exit ramps are in this section along with ramp spacing that is not adequate. In addition, drivers are often confused because there is only one continuous lane through downtown Dayton. The North/South Transportation Initiative Study (NSTS) of I-75 resulted in identifying this location as an improvement project.


The Reconstruction of Interstate 75 is split into different phases.

Phase 1A, the northern most part of the project that involves SR 4 that has been completed. 

Phase 1B, the southern most part of the project that involves US 35, which has a completion date of June 2013.

Phase 2, which involves everything between Phase 1A and Phase 1B, starting fall of 2012 with a completion date of September 2017. 

To get more information about each project, select the corresponding links on the left of this page under "I-75 Modernization."

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please contact the Public Information Officer
(937) 497-6820​