Through previous employment, employees of Prairie Engineers completed construction plans for the first phase of the Cardinal Hill Road project in eastern Sangamon County, Illinois. Cardinal Hill Road is a segment of new two and three lane roadway that will eventually provide a direct connection between Rochester and Riverton, Illinois. The completion of this segment of roadway will serve as a critical north-south connection through eastern Sangamon County, eventually connecting from Illinois Route 104 near Pawnee to Interstate 55 at Williamsville. While at a previous firm, Lisa Kramer served as Project Manager and Project Engineer for the design of the 1.7 mile first segment to be constructed near Rochester, the second 4.2 mile segment north of Rochester, and preliminary design on the remainder of the roadway to the Riverton exit for Interstate 72.
The first roadway portion constructed included 4,400 feet of urban roadway design with storm sewers and curb and gutter, and 4,400 feet of rural roadway design with open ditches and shoulders. Storm water detention and floodplain encroachment calculations were completed for this phase of work, and a Preliminary Bridge Design and Hydraulic Report was completed for a bridge over the Black Branch of the South Fork Sangamon River. Permits from the United States Army Corps of Engineers, the Illinois Department of Natural Resources, and the Illinois Department of Transportation were obtained for the bridge and culvert crossings Intersection Design Studies were completed for four intersections. A signalized intersection at Illinois Route 29 with the addition of turn lanes was included. Two public informational meetings were conducted during the design phase.