California State Route 66

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State Route 66

(CS&HC Section 366)

Length:

28.39 mi^[1] (45.69 km)

Formed:

1974 (from US 66)^[2]

West end:

SR 210 in La Verne

Major
junctions:

I-15 in Rancho Cucamonga

East end:

I-215 in San Bernardino

California State Routes
< SR 65		SR 67 >
Unconstructed - Deleted - Freeway - Scenic

State Route 66 is a state highway in Southern California, running along a section of old U.S. Route 66 from La Verne east to San Bernardino, passing through Claremont, Upland, Rancho Cucamonga, Fontana and Rialto along Foothill Boulevard. In San Bernardino, it is the part of Fifth Street west of H Street (at the Interstate 215 interchange).

[edit] History

U.S. Route 66 was assigned by the American Association of State Highway Officials in late 1926 and signed in 1928 by the Automobile Club of Southern California.

At the time of the 1964 renumbering, US 66 used the following route (in today's terms):^[3]

State Route 2, Interstate 10 to U.S. Route 101 (designated SR 2 in 1964, the same number it had before 1936)
U.S. Route 101, State Route 2 to State Route 110
State Route 110, U.S. Route 101 to Colorado Boulevard (designated State Route 11 in 1964, moved from Figueroa Street)
Colorado Boulevard, Colorado Place, Huntington Drive, Foothill Boulevard, Alosta Avenue and Foothill Boulevard, State Route 110 to State Route 66 (designated State Route 248 west of Interstate 210 in Monrovia from 1964 to 1992, and I-210 (signed as US 66) through Monrovia to State Route 66 from 1964 to ca. 1970, when I-210 was completed on new alignment)
State Route 66, State Route 210 to Interstate 215
Interstate 215 (part of I-15 in 1964), Interstate 15 and Interstate 40, State Route 66 to Arizona

US 66 continued to be signed east of Pasadena until 1974, when it was removed, and the remaining separate section became State Route 66.

[edit] San Bernardino to Arizona

From San Bernardino to the Arizona state line, US 66 followed the old National Old Trails Highway. The old highway veers significantly away from I-15 between Victorville and Barstow passing through Oro Grande, Helendale, and Lenwood. Through Barstow, it is Main Street. A Marine Corps base is on top of the original highway and is unpassable. From Daggett, Historic 66 leaves I-40, crossing it three times before winding away through Bagdad, Amboy,and Essex.

From Essex, the original alignment followed Goffs Road through Goffs and joining I-40 at the U.S. Route 95 exit. A later alignment is now I-40 from Goff. The original highway winds around I-40 in the Needles area, before crossing the Colorado River into Arizona.