The Oklahoman By RANDY ELLIS September 21, 2020
ELK CITY — Oklahoma's first diverging diamond interchange is now open at the interchange between Interstate 40 and State Highway 6/Main Street in Elk City.
A diverging diamond interchange differs from a traditional interchange in that traffic is redirected to the opposite side of the road prior to traversing the highway bridge crossing the interstate.
The configuration is designed to permit free-flowing left turns onto the interstate. Two phase traffic signals are installed at the roadway crossover points.
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