County Route J23 (California)
There are 45 routes assigned to the "J" zone of the California Route Marker Program, which designates county routes in California. The "J" zone includes county highways in Alameda, Calaveras, Contra Costa, Fresno, Kern, Inyo, Mariposa, Merced, Sacramento, San Benito, San Joaquin, Stanislaus, and Tulare counties.
County Route J1 is a county road in San Benito and Fresno counties. The route begins in Paicines, San Benito County, at State Route 25. Between Paicines and Panoche Valley, J1 is known as Panoche Road. Its north–south portion between Panoche Valley and Fresno County is called Little Panoche Road. In Fresno County, the route then intersects with Interstate 5 and terminates in Mendota at State Route 33 near State Route 180 in the Central Valley. East of Interstate 5, the alignment of J1 follows Fresno County's West Shields Avenue (which is Exit 379 off of Interstate 5). Shields Avenue ends at North Fairfax Avenue. J1 continues south 2 miles (3.2 km) on Fairfax Avenue to West Belmont Avenue, at which location J1 proceeds east on Belmont Avenue until its end at State Routes 33 and 180.
...
Wikipedia