When the City of Mankato was experiencing traffic flow and safety issues at a major intersection, MnDOT contracted with TKDA to complete an Intersection Control Evaluation/Traffic Study for the TH 22 corridor. TKDA’s in-depth analysis determined that the roundabouts were the best option to improve traffic flow and safety on TH 22.
Following the analysis MnDOT contracted with TKDA to complete the layout and final design of the recommended roundabouts. The project included the construction of two multi-lane roundabouts, the reconstruction of 0.5 mile of TH 22, concrete pavement rehabilitation, revised traffic signals and additional ADA ramps at 10 intersections. Through public outreach, TKDA educated the public about roundabouts and kept local citizens and businesses informed.