California State Route 16

State Route 16
The signed portion of SR 16 highlighted in red
Route information
Maintained by Caltrans
Length111.17 mi (178.91 km)
(includes 28.82 mi (46.38 km) on I-5 and US 50)
Existed1934–present
Major junctions
West end SR 20 near Rumsey
Major intersections
East end SR 49 near Drytown
Location
CountryUnited States
StateCalifornia
CountiesColusa, Yolo, Sacramento, Amador
Highway system
SR 15 SR 17

State Route 16 (SR 16) is a state highway in the northern region of the U.S. state of California that runs from Route 20 in Colusa County to Route 49 just outside Plymouth in Amador County, primarily crossing the Sacramento Valley. There is a gap in the route in the Sacramento area, which can be transversed along the I-5 and US 50 freeways.