Business Loop I-15 - Barstow

Business Loop I-15 serves Barstow via L Street and Main Street along portions of Historic U.S. 66 and old U.S. 91 between Exits 181 and 184. This 4.8 mile business loop is somewhat unusual in that the northern terminus is actually located at Interstate 40, east of I-15. The California State Highway System Signing Log (October, 1991) inventoried the Barstow business loop as following Main Street.

The route is well posted in both directions. County Road 66 shields were added to the route in 2012 to acknowledge the former alignment of U.S. 66.