Lake Saint Louis Boulevard / I-70 Interchange Roundabout Study
Lake Saint Louis, Missouri
- City of Lake Saint Louis, Missouri
Lake St. Louis has experienced increasing traffic congestion and delays on the south side of the Lake St. Louis Boulevard interchange with Interstate 70. Oates studied potential intersection improvements at the interchange, specifically roundabout configurations, for two existing closely spaced signalized intersections on the south side of I-70.
A report was prepared that identified conflicts, constraints, impacts (utility and right of way), and costs. Oates established design criteria, analyzed traffic data, developed conceptual geometry, provided analysis of traffic operations for each alternate, and provided estimates of cost for each alternate. Funding options were reviewed, including Surface Transportation Program (STP), Congestion Mitigation Air Quality (CMAQ), Highway Safety Grants, as well as County Road Board Funds.