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Superior’s “diverging diamond” interchange reports zero injury crashes in the first year

New design at U.S. 36 and McCaslin sees only low-severity wrecks in 2016

Traffic flow along McCaslin in Boulder, going over U.S. 36 on Feb. 1, 2017.
Cliff Grassmick, Daily Camera file
Traffic flow along McCaslin in Boulder, going over U.S. 36 on Feb. 1, 2017.
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Superior officials on Wednesday reported zero injury crashes and a 36 percent decrease in non-injury crashes along Boulder County’s “diverging diamond” interchange during its first year of operation.

The old interchange formation saw roughly two crashes each month, according to an official report released Wednesday morning. It adds that with the new diverging diamond design, there were only 18 crashes at the intersection in 2016, all low-severity, rear-end or sideswipe crashes with no injuries.

“It’s incredibly rewarding to see the fruits of our labor,” Superior Director of Public Works Alex Ariniello said in a statement Wednesday. “To first approve and then construct this project, paying off, particularly when it comes to safety.”

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