Bi-State Development Agency
| A MetroLink train crossing the Eads Bridge. | |
| Formation | September 20, 1949 | 
|---|---|
| Type | Interstate compact | 
| Headquarters | One Metropolitan Square 211 North Broadway St. Louis, Missouri, 63102, U.S. | 
| Region served  | Greater St. Louis, Missouri–Illinois, U.S. | 
| Executive Director | Taulby Roach | 
| Subsidiaries | Gateway Arch Riverfront Metro Transit St. Louis Downtown Airport St. Louis Regional Freightway BSD Research Institute | 
| Website | bistatedev.org | 
The Bi-State Development Agency is an interstate compact established between Missouri and Illinois in 1949. This compact created an organization that has broad powers in seven county-level jurisdictions (St. Louis City, St. Louis, St. Charles and Jefferson counties in Missouri and St. Clair, Madison and Monroe counties in Illinois). Bi-State operates five enterprises, including the Gateway Arch Riverfront, Metro Transit, the St. Louis Downtown Airport, the St. Louis Regional Freightway and the Bi-State Development Research Institute.