- I-64/Union Hill Road Interchange Access Justification
Burns & McDonnell performed an access justification study for a proposed new interchange on I-64 at Union Hill Road in Fairview Heights, Ill. Several interchange configurations were examined, each fitted to the steep terrain. Preliminary plans and profiles were developed for the interchange, two miles of access roads and seven new or modified intersections. Two public information meetings were conducted. Burns & McDonnell performed traffic data collection, a traffic diversion assessment, capacity analyses for interchanges and intersections on connecting arterial, and mainline weaving and ramp analyses. Trip generation rates were calibrated to field data. To assess feasibility, Burns & McDonnell calculated travel savings and cost estimates, and provided an environmental reconnaissance.