As a major suburb of St. Louis located in western St. Louis County, the City of Chesterfield, Missouri, determined that both short-term and long-term traffic planning must be made a priority. To meet this goal, the city retained GBA to complete a detailed transportation evaluation of the city's street network. As part of this effort, high accident locations were identified, daily and peak period traffic volumes were recorded, traffic operations were evaluated and ranked, and the existing street system and traffic controls were inventoried. Improvement options to correct the existing deficiencies were developed with estimates of probable construction costs and presented to the city for immediate implementation.
GBA collected and utilized this information to develop a detailed transportation demand model of Chesterfield. This model replicates the major street system, traffic controls, and land uses throughout the city, as well as in the surrounding vicinity. Based upon this information, the traffic model was designed and calibrated to closely replicate the existing traffic patterns and turning movements at the major intersections within the city. Utilizing the completed model, the city can now estimate the impacts of proposed roadway corridor enhancements on the overall traffic operations within the city, determine the specific impacts of developments on adjacent intersections in order to estimate improvement costs and fees, and evaluate the effects of land use development types and densities on the long-range traffic operations within the city.
