21 in San Bernardino County, California

21 in San Bernardino County is a service road. It runs in a southeast-northwest direction and ends at Barton Flats Campground, while the other end is a cul-de-sac. 21 also exists in San Francisco, San Diego County, Siskiyou County, Madera County and Riverside County.
Road Type
service road
Route
southeast-northwest