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ID-51, South Side Canal Replacement

A new box culvert will eliminate a narrow point on Idaho Highway 51

The existing culvert constricts the highway, posing a hazard for wide loads and requiring guardrail. The new bridge will accommodate two twelve-foot travel lanes, two-foot shoulders, and enough clear space that guardrail will not need to be reinstalled.

During construction, traffic over the bridge will be reduced to a single lane, controlled by flaggers or automated temporary signals. Motorists should anticipate a delay of no more than 15 minutes.

Total Cost
$1.14M
Est. Completion
May 2021
Contractor
Knife River
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