STH 310 Resurfacing and Roundabouts

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Ayres worked with the Wisconsin Department of Transportation’s Northeast Region to improve the safety of STH 310 from CTH R to Columbus Street at the west limits of Two Rivers. Numerous accidents had occurred at the CTH R, CTH Q, and CTH B intersections, and all three intersections qualified for Highway Safety Improvement Program funding. This project had previously been in development by the Northeast Region. The project included resurfacing a 5-mile section of STH 310 roadway and constructing the roundabouts at the three county highway intersections.

A railroad crossing report was completed for the crossing with STH 310. Through coordination with the Northeast Region, a letter was sent to Canadian National Railway for the railroad to construct a new crossing surface with signals and gates to be completed before the STH 310 project was finished. The Trans 220 process was followed for utility coordination, in addition to holding a utility coordination meeting.

The design of the CTH Q roundabout required accommodations for 190-foot-long trucks to transport large wind turbine components manufactured in the City of Manitowoc.

Project Information

Client's Name

Wisconsin Department of Transportation, Northeast Region


Two Rivers, WI

Primary Service

Traffic Engineering


State + Federal + Tribal