|State Route 266|
|Defined by S&HC § 566, maintained by Caltrans|
|Length:||11.721 mi (18.863 km)|
|South end:||SR 266 at Nevada state line|
|SR 168 at Oasis|
|North end:||SR 264 at Nevada state line|
State Route 266 (SR 266) is a state highway in the U.S. state of California. The route is a connector between Nevada State Route 264 and Nevada State Route 266, and it can serve as transportation of agricultural goods between California and Nevada via the route's only junction State Route 168. In the event that SR 168 is closed, SR 266 connects to Nevada State Route 264, which intersects with U.S. Route 6 in order to provide an alternate access to California.
State Route 266 is part of the California Freeway and Expressway System. The entire route, consisting of two lanes for two-way traffic, traverses on the flat land in the Fish Lake Valley east of the White Mountains.
State Route 266 begins at the western terminus of Nevada State Route 266 at the Nevada state line. The route travels west-northwest, then turns to the west for about another 1.8 miles before approaching Oasis, the only unincorporated community that the route passes through. At Oasis, SR 266 meets at the intersection with SR 168 which serves as the gateway into the Owens Valley from Nevada. Upon leaving Oasis, SR 266 continues to the west briefly, then turns to north-northwest. Within the last 7 miles, SR 266 slowly curves more towards northwest as the route approaches the Nevada state line. The route ends at the state line at the southern terminus of Nevada State Route 264.
The segment of present day SR 266 from Oasis to Nevada State Route 264 was incorporated into the State Highway System in 1933; it was defined as Legislative Route 63. The route remained unchanged until 1964, when in that year the route's name was designated as Mono County Road 101. In 1984, the definition was modified to redesignate the segment as an extension of State Route 168 in order for that route to be connected to Nevada. Two years later, in 1986, there was a construction of a new segment traveling east from Oasis and connecting to Nevada State Route 266. When the extension was complete, the two segments – the SR 168 extension and the newly completed – was assigned SR 266.
The entire route is in Mono County.
|0.00||SR 266 – Lida, Goldfield, Beatty||Continuation beyond the Nevada state line|
|0.00||Nevada state line|
|Oasis||4.30||SR 168 – Big Pine|
|11.72||Nevada state line|
|11.72||SR 264||Continuation beyond the Nevada state line|