Business Loop Interstate 55 Herculaneum-Crystal City-Festus
Business Loop Interstate 55 is a north-south highway in Jefferson County. This runs between M.P. 174 at M.P. 178 on Interstate 55. From M.P. 174 north it is labeled well through Crystal City and Festus. After these towns it not labeled. BUSN Loop I-55 passes through the following towns in Jefferson County. Crystal City
BUSN Loop I-55 is multi-plexed in Jefferson County. U.S. Rt. 61, from Crystal City to Herculaneum. U.S. Rt. 67, from Crystal City to Herculaneum.