Diverging Diamond Interchange to Deliver Economic Benefits in Hancock County

Tue April 27, 2021 - Midwest Edition #9
AASHTO Journal


A diverging diamond interchange (DDI) proposed by the Ohio Department of Transportation, the city of Findlay and the Hancock County Engineer's Office as part of the rehabilitation of the intersection of Interstate 75 and County Road 99 should deliver a range of economic benefits for the area – from greater safety and reduced traffic congestion to improved freight efficiency.

"A DDI will ensure the sustainability of the economic opportunities in this corridor," said Hancock County Engineer Doug Cade in a statement. "With increased commuter and truck traffic comes the need to take steps to improve the efficient movement of our labor force and goods to and from this area so that we can continue to see prosperity and be ready for future opportunities."

The Ohio DOT noted that this DDI would shift eastbound and westbound traffic to the other side of the bridge at signalized crossovers — eliminating left turns across traffic and the traffic signals for left turns. The benefit is that all traffic can enter the interstate in a "free flow of movement" that in particular reduces the long start and stop times for trucks at traffic signals.

Additional improvements planned for CR 99 corridor include construction of a shared-use path for bike and pedestrian traffic along the south side of CR 99 and utilizing the original bridge structure for crossing over I-75.

"Infrastructure improvements may not be glamorous, but they are essential to creating a safe and efficient environment for our citizens, businesses, visitors and future investment," said Christina Muryn, mayor of Findlay. "This design is the best option for our community today and for decades to come."




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