A diverging diamond interchange, or DDI, is being planned by the Ohio Department of Transportation that will create a “free flowing” pattern with fewer traffic signals, according to local officials.
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The project, estimated to cost about $4.1 million and be fully funded by the state, is not expected to be built until 2023, Montgomery County Transportation Improvement District Executive Director Steve Stanley said.
The first DDI in Ohio was built at I-270 and Roberts Road outside of Columbus, Stanley said. Another has been installed at I-475 and Ohio 25 in Perrysburg near Toledo, according to ODOT’s website.
The DDI design allows “free flowing turns when entering and exiting an interstate,” according a transportation video.
The Ohio 725 exit is one I-75’s busiest interchanges in the Dayton area. It essentially splits Miamisburg and Miami Twp. and is a gateway to the Dayton Mall area - now being branded as the Miami Crossing District - and is a business, entertainment and shopping corridor.
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Separated by concrete barriers, “both sides drive on the opposite side of the road before crossing back and resuming their original pattern,” the video states.
The DDI design is similar to the Austin Center interchange at I-75, Stanley said, but it has fewer traffic signals.
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