California State Route 135

State Route 135
State Route 135
	Map of Santa Barbara County in southern California with SR 135 highlighted in red
Route information
	Maintained by Caltrans
Length	21.141 mi (34.023 km) (Does not include overlaps with SR 1 and US 101 Bus.)
Major junctions
South end	US 101 at Los Alamos
North end	US 101 / SR 166 in Santa Maria
Location
Country	United States
State	California
Counties	Santa Barbara
Highway system
	State highways in California; Interstate; US; State; Scenic; History; Pre‑1964; Unconstructed; Deleted; Freeways;

State Route 135 is a state highway in the U.S. state of California, entirely within Santa Barbara County, and is basically a bypass of U.S. Route 101 in northern Santa Barbara County between the town of Los Alamos and the city of Santa Maria.

Route description

SR 135 starts off as Bell Street in Los Alamos and goes along with Vandenberg Road after an intersection with Harris Grade Road before merging with State Route 1 south of Orcutt. There is a brief freeway portion at the northern split of SR 135 and SR 1, but it quickly reverts to a city street upon crossing Clark Avenue. North of Santa Maria Way, it is considered Business US 101, although signage is poor. SR 135 continues its northbound journey as Broadway and passes through the Santa Maria Town Center shopping center at the intersection with Main Street (State Route 166). SR 135 meets US 101 again just before crossing the Santa Maria River at the Santa Barbara/San Luis Obispo county line.^{[citation needed]}

History

State Route 135 is the original routing for US 101 from Santa Maria to Los Alamos until the current alignment was completed in 1933. But instead of turning east just before old town Orcutt and then north into Santa Maria as it does currently, it continued north along what is now Graciosa road and then Marcum Street linking up with E. Clark Avenue just north of the Orcutt water tower. It then followed Clark Avenue east through old Orcutt and turned north on Orcutt Road at the location of the current Highway 135/Clark Avenue interchange and headed north through Santa Maria.

Route 135 was created in 1964 to encompass most of the old routing.^[2]^[3]

Major intersections

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).^[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Santa Barbara County.

Location	Postmile ^[1]^[4]^[5]	Exit ^[6]	Destinations	Notes
Los Alamos	0.00		US 101 – Santa Maria, San Francisco, Santa Barbara, Los Angeles	Interchange; south end of SR 135; US 101 exit 154
	1.00		Bell Street	Former US 101 north
	M9.10		Harris Grade Road – Lompoc	Former SR 1 south (Restricted area for trucks and autos with trailers that are over 30 feet long).
	M9.61		San Antonio Road – Vandenberg AFB
	M11.72 R31.04^{[N 1]}		SR 1 south – Vandenberg AFB, Lompoc	Interchange; south end of SR 1 overlap; southbound right exit and northbound entrance; former CR S20 south
		South end of freeway on SR 1
	R34.78^{[N 1]} R9.10		SR 1 north – Guadalupe	Interchange; North end of SR 1 overlap; northbound left exit and southbound entrance
Orcutt	R10.41	17	Clark Avenue – Orcutt
Orcutt		North end of freeway
Santa Maria	13.00		US 101 Bus. south (Santa Maria Way) to US 101	South end of US 101 Bus. overlap
	13.54		Betteravia Road
	14.78		Stowell Road
	15.77		SR 166 (Main Street) – Guadalupe
	16.77		Donovan Road
	17.81		US 101 / SR 166	Interchange; north end of US 101 Bus. overlap; north end of SR 135; US 101 exit 173
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus