No current plan exists to extend Route 180 westward from Mendota past Interstate 5 and into San Benito County.

It runs from the Portola Avenue overpass at Interstate 580 in Livermore to State Route 4 near the community of Holt.

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.

CR J2 then crosses the sea-level Union and Roberts Islands in the San Joaquin-Sacramento River Delta before terminating at State Route 4.

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.

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 southern terminus for CR J7 is at State Route 59 in Merced, locally known as the Snelling Highway.

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 (locally signed as Yosemite Boulevard) 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.

Once it crosses the Stanislaus River and enters San Joaquin County, the route is locally signed as Santa Fe Road.

The county route eventually meets its northern terminus with SR 99 in eastern Stockton.

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.

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.

Next it crosses the Stanislaus River into Oakdale, passes the old Hershey's plant, and continues over the Hetch Hetchy Aqueduct.

The route from this point travels another 4 mi, mostly through the city of Galt, before reaching its northern terminus at SR 99.

The route crosses into San Joaquin County as Walnut Grove Road at the Mokelumne River and proceeds eastward to the interchange at Interstate 5 before it terminates at the junction of County Route J8 (Thornton Road) in the town of Thornton.

As CR J18 reaches State Route 165, it diverges from River Road as it is co-routed with SR 165 for a very brief distance.

It runs from State Route 99 in Pixley to Old Stage Road east of Terra Bella.

It runs from County Line Road (CR J44) east of Delano to State Route 245 northwest of Woodlake.

The initial portion of the route originally ran on Elder Avenue, crossing the railroad tracks to Camp Drive.

A realignment in the 2010s occurred when Betty Drive was expanded to a four-lane roadway and was re-routed over the railroad tracks to connect to Riggin Avenue.

The railroad crossing at Elder Avenue was eliminated and was cut off from traffic coming from SR 99, converting to a three-block neighborhood street.

It runs from Center Avenue (CR J22) in Alpaugh to State Route 43 south of Corcoran.

It runs from State Route 190 near Springville to near Balch Park in the Sierra Nevada mountains.