CLOs on the Move

Established in 1949 through an interstate compact between Missouri and Illinois, ratified by the U.S. Congress and signed by President Harry S. Truman in 1950, Bi-State Development was created to serve and enrich the region. Fulfilling that mission, our rich history includes planning interstate highways, operating a power plant, and reducing pollution in the Mississippi River. We have the longest-standing partnership with the National Parks Service, and made possible the trams that take you to the top of the Gateway Arch.