STH 65 Corridor, St. Croix County

Expertise: GIS

STH 65 Corridor, St. Croix County

KL Engineering was the prime consultant for the completion of a planning study for STH 65 in St. Croix County. The study extended from I-94 to the City of New Richmond, a distance of approximately 11 miles. The project culminated in an Environmental Assessment / Finding of No Significant Impact (EA/FONSI) and a preliminary plat. The EA evaluated capacity expansion alternatives and environmental impacts, and developed a preferred location and preliminary plans. The preliminary plat was used to map and preserve a corridor for future development.

Four bypass alternatives were studied to develop a roadway that would best serve the needs of the local residents and WisDOT while limiting the impacts to property and natural resources. The study involved extensive coordination with WisDOT, state and federal agencies, local residents, and local officials. This included obtaining WDNR and US Fish and Wildlife Service concurrence to mitigate impacts to the federally owned Kerber Waterfowl Production Area.

A traffic analysis was completed for present and future capacity. Synchro, SimTraffic, Highway Capacity Software and Rodel were used to model several alternatives for intersection improvement, including signals, roundabouts, and turn lanes.

The preferred alternative reconstructs the existing two-lane highway into a four-lane enhanced expressway that includes a diamond interchange at USH12-WIS 65, three jug-handle interchanges, three grade separated crossings, and right-in right-out at-grade intersections or cul du sacs of local roads.

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