Business Loop I-8 - El Cajon

Business Loop I-8 stretches 8.3 miles east from Exit 15 in El Cajon to Exit 23 near Lakeside. The route follows historic U.S. 80 along El Cajon Boulevard and Main Street through El Cajon and Highway 8 Business through the unincorporated area northeast of the city. Shielding for Business Loop I-8 appears only along the commercial boulevard within El Cajon. The remainder of the route is signed with street signs displaying "Highway 8 Business".

According to the California State Highway System Signing Log (October, 1991), Business Loop I-8 in El Cajon runs from

Interstate 8 near Chase Avenue over El Cajon Boulevard and Main Street to Interstate 8 near Oakdale Avenue.

This omits the San Diego County section of Highway 8 Business.