California State Route 3

State Route 3 (SR 3) is a state highway in the U.S. state of California that serves Trinity and Siskiyou counties. It runs from SR 36 north along the shore of Trinity Lake, Fort Jones and Etna. The route then approaches Yreka, intersecting with Interstate 5 (I-5), and turns east to Montague. The road was numbered SR 3 in 1964, and most of it has been part of the state highway system since 1933.

State Route 3
SR 3 highlighted in red
Route information
Defined by Streets and Highways Code § 303
Maintained by Caltrans
Length146.369 mi[1] (235.558 km)
SR 3 is broken into pieces, and the length does not reflect the SR 299 overlap that would be required to make the route continuous.
Existed1964 renumbering[2]–present
Trinity Heritage Scenic Byway
Major junctions
South end SR 36 near Peanut
North endBall Mountain Little Shasta Road in Montague
CountiesTrinity, Siskiyou
Highway system
SR 2 SR 4