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State calling interchange design a gem

Posted: June 8, 2014 at 3:54 a.m.

Diverging diamond interchange

At first blush, the proposed solution for traffic congestion at the Interstate 430/North Rodney Parham Road interchange in Little Rock seems as vexing as the problem.

I-430 at Rodney Parham diverging diamond interchange proposal

The Arkansas Highway and Transportation Department has proposed converting the Interstate 430/North Rodney Parham Road interchange into a diverging diamond interchange, which is a type of interchange in which two directions of traffic on the non-freeway road cross to the opposite side on both sides of the bridge at the freeway. (By Arkansas Highway and Transportation Department)
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