California State Route 4

State Route 4
SR 4 highlighted in red
Route information
Maintained by Caltrans
Length	197 mi[1] (317 km)
Existed	1934[2]–present
Tourist routes	Ebbetts Pass Scenic Byway
Restrictions	Segment through Ebbetts Pass closed during winter
Major junctions
West end	San Pablo Avenue in Hercules
Major intersections	I-80 in Hercules I-680 in Concord SR 242 in Concord SR 160 near Antioch I-5 in Stockton SR 99 in Stockton CR J6 in Farmington SR 49 in Angels Camp SR 207 near Lake Alpine
East end	SR 89 near Markleeville
Location
Country	United States
State	California
Counties	Contra Costa, San Joaquin, Stanislaus, Calaveras, Alpine
Highway system
State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways
← SR 3 → I-5

State Route 4 (SR 4) is a state highway in the U.S. state of California, routed from Interstate 80 in the San Francisco Bay Area to State Route 89 in the Sierra Nevada. It roughly parallels the Sacramento-San Joaquin River Delta, a popular area for boating and fishing, with a number of accesses to marinas and other attractions. After crossing the Central Valley, the highway ascends up the Sierra foothills. It passes through Ebbetts Pass and contains the Ebbetts Pass Scenic Byway, a National Scenic Byway.