INFRASTRUCTURE > McAlvain has been involved with many of Idaho’s largest infrastructure projects including the Flying Wye, the single largest highway project in Idaho’s history.  McAlvain’s highlighted heavy civil experience includes the Flying Wye, the Interstate 84 Cole/Overland interchange, Dunnigan Creek Bridge, the East ParkCenter River Crossing, and the rehabilitation of Boise’s Barber Dam and Twin Fall’s Hansen Bridge.  Our highlighted industrial experience includes wastewater treatment plants for the city of Star, the city of Emmett, as well as for the Harris Ranch Community, a water treatment plant for the city of Salmon, pump stations, and various concrete water reservoirs around the region.