Business Loop I-5 - Mount Shasta

Business Route I-5

I-5 north at Business Loop I-5 to Mount Shasta, CA — The Mount Shasta business loop departs Interstate 5 northbound at Exit 737. The stand alone shield posted for Business Loop I-5 here represents a rare shielding of an business route on an Interstate mainline in California. The one exception is the signing of Business Loop I-80 along Capital City Freeway at Sacramento. 03/31/05

Shields for Business Loop I-5 appear at the north and south wye interchanges for Mount Shasta, but nowhere else along the 3.8 mile route. Mount Shasta Boulevard branches north from Exit 737 along old U.S. 99 to the city center at Lake Street. The boulevard splits with Spring Hill Drive before merging onto I-5 at Exit 740.

Updated August 4, 2026