Business Loop I-55 - Festus, Crystal City and Herculaneum

Business Loop I-55 joins U.S. 67 and U.S. 61 (Truman Boulevard) north as they loop east from Exit 174 through the cities of Festus and Crystal City. Commercial Boulevard extends the three routes north to the city of Herculaneum, where Business Loop I-55 separates for McNutt Street (Herculaneum Spur) west to Exit 178.

The 5.1 mile loop is poorly signed, with shields posted at Veterans Boulevard, but the route otherwise signed solely as U.S. 61/67. Furthermore the route is not inventoried on the MoDOT HP Map application (https://traveler.modot.org/hpmaps/).