Downtown Dayton Sub-Corridor
- Photo rendering of I-75 modernization (click for larger PDF, 1MB)
Originally developed as part of the North South Transportation Initiative, this project improves I-75 between Keowee Street and Edwin C Moses Boulevard to address safety and capacity concerns by adding continuous through lanes, eliminating left entrance and exit ramps, and increasing the spacing between interchanges. More information is available in the ODOT Project Management Plan . Ohio DOT maintains project information.
This project is divided into three phases:
- Phase 1A: Interchange upgrades at SR 4 and Main Street-Grand Avenue
- Photo rendering Phase 1A (click for larger PDF, 786kb)
- Description: Improve the northbound curve on I-75 at SR 4 and increase the capacity of the interstate by adding an additional lane in each direction. Rebuild and improve the northernmost ramps at Stanley and close ramps at Grand, Riverside, Leo, Neva, and the southernmost ramps at Stanley
- Construction Start: November 2007
- Construction Duration: 3.5 years
- Estimated Cost: $174 million
- ODOT Animation of Phase 1A Changes
- Photo rendering Phase 1B (click for larger PDF, 554kb)
- Phase 1B: Addition of third lane on I-75 at the US 35 interchange
- Description: Modify the US 35 interchange to provide three continuous through lanes in each direction on I-75. Closing of the Albany Street ramps to/from I-75
- Cost: $92 million
- Construction start: 2010 (tentative
- Photo rendering Phase 2 (click for larger PDF, 777kb)
- Phase 2: Re-design I-75 and ramps in Downtown Dayton
- Description: Replace the various left-side and right-side ramps with a single, improved, centrally located interchange to provide access to downtown Dayton.
- Estimated Cost: $390 million
- Status: Project is currently under design
- Estimated Construction: 2012
- Project Benefits:
- Right hand entrances and exits
- Increased spacing between ramps
- Consolidated local access to ramps
- Better traffic flow
- Fewer traffic incidents and related congestion
- Three continuous lanes for through traffic
ODOT Public Participation
On October 16,2007, ODOT held a public meeting to share information (
:4.6 MB) with the community on the reconstruction and modernization of Interstate 75 through Dayton. The first phase of construction began in fall 2007.
Dayton Subcorridor Design Aesthetics
MVRPC presented urban design concepts (:2.85 MB) for consideration in the aesthetics portion of the I-75 downtown Dayton subcorridor design. These concepts represent a collective consensus among the City of Dayton, the Grandview Hospital, the Dayton Art Institute, and MVRPC.
ODOT combined the proposed designs from MVRPC and the City of Dayton into a conceptual design which has undergone further revisions. ODOT has presented their most recent Design Aesthetics Proposal.
Dayton Subcorridor Noise Abatement
The Ohio Department of Transportation has proposed erecting noise abatement walls along I-75. ODOT proposes a transparent noise wall rather than a solid noise wall on the north side (Grafton Hills neighborhood side) to preserve the viewshed of the area’s major institutions such as the Dayton Art Institute, the Masonic Temple and Grandview Hospital. The south side of I-75 will have solid noise walls. ODOT developed a 3D simulation of the noise barrier design proposal.