Route 4 is from:
(a) Route 80 in Hercules to Route 5 in Stockton via north of Concord and via Antioch.
(b) Route 5 to Route 99.
(c) Route 99 in Stockton to Route 49 at Altaville via the vicinity of Copperopolis.
(d) Route 49 in Angels Camp to Route 89 near Markleeville via Murphys, Calaveras Big Trees, Dorrington, and Bear Valley.