This project is located in a highly urban area in the city of Perris with large volumes of traffic traversing this corridor during the peak periods. KOA was a member of David Evans and Associates’ (DEA) team, which was responsible for major road improvement and reconstruction of the bridge at this interchange. KOA provided intersection design improvements including traffic signal modification and redesign of two ramps and two major intersections on 4th Street. KOA also provided lighting and ramp meter design for the interchange. This project required coordination and approval from District 8. Other elements of the work for the prime consultant included completion of PS&E.