California county routes in zone J
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.
J1
County Route J1 is a county highway in San Benito and Fresno counties in the U.S. state of California. It runs from State Route 25 in Paicines to State Route 33 in Mendota. The route is known as Panoche Road, Little Panoche Road, Shields Avenue, Fairfax Avenue, and Belmont Avenue.The route begins in Paicines in San Benito County at State Route 25. Between Paicines and Panoche Valley, CR 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 CR J1 follows Fresno County's West Shields Avenue. Shields Avenue ends at North Fairfax Avenue. CR J1 continues south on Fairfax Avenue to West Belmont Avenue, where CR J1 proceeds east on Belmont Avenue until its end at SR 33 in Mendota. Belmont Avenue continues east without the county route designation to SR 180.
Panoche Road lies within the corridor of an unbuilt Route 180 segment. No current plan exists to extend Route 180 westward from Mendota past Interstate 5 and into San Benito County.
Parts of J1 east of CA-25 to Little Panoche Rd have large potholes.
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J2
County Route J2, or I-580 Alternate, is a county highway that is made up of a series of streets and roads in Alameda and San Joaquin counties in the U.S. state of California. It runs from the Portola Avenue overpass at Interstate 580 in Livermore to State Route 4 near the community of Holt. The route is known as portions of Portola Avenue and Livermore Avenue, Tesla Road, Corral Hollow Road, and portions of Lammers Road and Tracy Boulevard.;Route description
County Route J2 begins at the Portola Avenue overcrossing of Interstate 580 in Livermore. It was a former partial interchange that closed permanently in 2011 due to the interchange that opened with Isabel Avenue west of Portola. The route follows Portola to Livermore Avenue, where CR J2 turns southward to pass through Livermore's downtown. The highway continues past the southeast edge of Livermore to become Tesla Road and rise into the Diablo Range, which separates the outer San Francisco Bay Area from the San Joaquin Valley.
At the Alameda-San Joaquin county line, CR J2 becomes Corral Hollow Road and enters the narrow valley of the same name. Upon approaching the San Joaquin Valley, the road turns northward, meeting Interstate 580 again and arriving at the southern subdivisions of Tracy. After passing through this city, the road passes under Interstate 205, shifts briefly onto Lammers Road, and soon turns northward onto Tracy Boulevard. CR J2 then crosses the sea-level Union and Roberts Islands in the San Joaquin-Sacramento River Delta before terminating at State Route 4.
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J3
County Route J3 is a county highway that runs north-south through Stanislaus and San Joaquin counties in the U.S. state of California. It runs from State Route 132 east of Vernalis to State Route 12 in Lodi. The route is known as Kasson Road, Airport Way, West Lane, and Hutchins Street.;Route description
The route begins east of Vernalis as Kasson Road, running northward from the road's intersection with State Route 132. After almost the route meets Airport Way and follows it northward past Manteca, Lathrop, and French Camp into Stockton. CR J3 then follows West Lane out from Stockton and becomes Hutchins Street for the route's last. The route reaches its northern end at State Route 12 in Lodi.
The highway is also known as Stanislaus County Route J3 and San Joaquin County Route J3, though all but of the route is within San Joaquin County.
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J4
County Route J4 is a county highway in the U.S. state of California that runs nominally north-south across portions of San Joaquin, Alameda, and Contra Costa counties that are growing in population and suburbanization. The route connects the suburbs of the far outer East Bay and the Sacramento River Delta with the northern San Joaquin Valley, running from Airport Way and Kasson Road to State Route 4 near Discovery Bay. It is known as Durham Ferry Road, Kasson Road, Grant Line Road, Byron Road, Byron Bethany Highway, and Byron Highway.The route begins southeast of Tracy at Airport Way and Kasson Road, passes through Tracy and Byron, and terminates at State Route 4 between Discovery Bay and Brentwood.
The portion between Tracy and Brentwood lies along the unconstructed corridor of State Route 239. SAFETEA-LU, federal legislation enacted in 2005, in federal appropriations toward construction of the route.
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J5
County Route J5 is a county highway in San Joaquin County, California, United States. It runs for about 30 miles, from State Route 99 in Ripon to Peltier Road north of Lockeford. It is known as Jack Tone Road and Elliot Road.;Route description
County Route J5 begins at State Route 99's interchange with Jack Tone Road in Ripon. Following Jack Tone Road, CR J5 passes through SR 120 east of Manteca and State Routes 4 and 26 east of Stockton. Eventually, it curves northwest where it is then co-routed with State Routes 12 and 88 at a right turn in Lockeford for a short distance before leaving SR 12 / SR 88 at a left turn at Elliot Road. It eventually leads to Peltier Road, where CR J5 ends.
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J6
County Road J6 is a county highway in Stanislaus and San Joaquin counties in the U.S. state of California. It runs from State Route 108 near Del Rio to State Route 26 in Bellota. The route is known as McHenry Avenue, Escalon Avenue in Escalon, and Escalon-Bellota Road.;Route description
County Route J6 begins at the junction with State Route 108 near Del Rio. It continues north as McHenry Avenue to the junction with State Route 120 in Escalon. Continuing north as Escalon Avenue, it becomes Escalon-Bellota Road as it leaves Escalon, eventually crossing State Route 4 in Farmington and ending at its northern terminus at State Route 26 in Bellota, 4 miles east of Linden.
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J7
County Route J7 is a county highway in Merced, Stanislaus and San Joaquin counties in the U.S. state of California. It mostly parallels State Route 99 to the east and generally follows the BNSF Railway between Merced and Stockton. It also connects several smaller communities including Atwater, Winton, Cressey, Ballico, Denair, Hughson, Empire, Riverbank, and Escalon. CR J7 runs from State Route 59 and West Olive Avenue in Merced to SR 99 in Stockton. The route is known as Santa Fe Drive, Santa Fe Avenue, Claus Road, First Street in Riverbank, Santa Fe Road, Main Street and Escalon Avenue in Escalon, Escalon-Bellota Road, and Mariposa Road.;Route description
The southern terminus for CR J7 is at State Route 59 in Merced, locally known as the Snelling Highway. The route is locally signed as Santa Fe Drive. From this point, it travels northwest for 12 mi through Merced County, passing by the former site of Castle Air Force Base in Atwater. Upon crossing the Merced River, the route continues in Stanislaus County as Santa Fe Avenue for another 20 mi until it reaches the community of Empire. In Empire, the route briefly co-signs with SR 132 for just over 1 mi before turning onto Claus Road, where it skirts the eastern edge of Modesto. The route follows Claus Road for approximately 6.5 mi, passing the former site of the Riverbank Army Ammunition Plant as well as the Rainbow Fields sports park.
CR J7 then follows SR 108 westward in Riverbank for approximately 0.9 mi before turning onto First Street and continuing on a north-south trajectory. Once it crosses the Stanislaus River and enters San Joaquin County, the route is locally signed as Santa Fe Road. At this point, it continues its parallel path with the BNSF rail line. About 4.3 mi after entering San Joaquin County, the route then enters Escalon and becomes Main Street for 0.7 mi before reaching SR 120. CR J7 very briefly co-signs with SR 120 before intersecting with CR J6. The two county routes share the same roadway for 2.5 mi before CR J7 follows a curve onto Mariposa Road on a northwest-southeast trajectory.
At this point, CR J7 continues on Mariposa Road, a mostly rural road. While on Mariposa Road, CR J7 passes just north of the BNSF Stockton Intermodal Yard. The county route eventually meets its northern terminus with SR 99 in eastern Stockton.
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J8
County Route J8 is a county highway in San Joaquin and Sacramento counties in the U.S. state of California. It mostly parallels Interstate 5 to the east and generally follows the Union Pacific Railroad between Stockton and Sacramento. CR J8 runs from State Route 99 at Hammer Lane in Stockton to SR 99 at Broadway in Sacramento. The route is known as Hammer Lane in Stockton, Thornton Road, Franklin Boulevard, and a tiny portion of Broadway in Sacramento.;Route description
County Route J8 starts at the interchange of Hammer Lane and State Route 99 in Stockton. The route proceeds west on Hammer Lane to the intersection of Thornton Road, then turns northwest, following Thornton Road from Stockton to the Sacramento County line north of Thornton.
North of Thornton, the route proceeds slightly away from I-5 until it parallels the Union Pacific Railroad and crosses the Cosumnes River into Sacramento County. From here the route is known as Franklin Boulevard and proceeds north to the town of Franklin. Northbound traffic must turn east onto Bilby Road to cross the railroad, then turn north on Willard Parkway to rejoin Franklin Boulevard south of its junction with Elk Grove Boulevard. Southbound traffic follows the original alignment of Franklin Boulevard to cross the railroad tracks. The route continues north through Elk Grove and parts of the city of Sacramento before its junction with SR 99 at Broadway in Sacramento.
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