Route 108 is from:
(a) Route 5 near Crows Landing to Route 99 near Modesto.
(b) Route 132 in Modesto to Route 120 east of Oakdale.
(c) Route 120 near Yosemite Junction to Route 49 south of Jamestown.
(d) Route 49 south of Jamestown to Route 395 via the vicinity of Sonora and Long Barn.