Bridgeton is a second-ring suburb of Greater St. Louis in northwestern St. Louis County, Missouri, United States. Bridgeton is located at the intersection of the St. Louis outer belt and I-70. Bridgeton serves as the primary transport hub within Greater St. Louis. The population at the 2020 census was 11,445. Portions of St. Louis Lambert International Airport are within Bridgeton. The town is featured in the documentary Atomic Homefront, which covers the effects of radioactive waste stored in the nearby West Lake Landfill site.