Former US Highway 466
Click here for a key to the symbols used. An explanation of acronyms may be found at the bottom of the page.
No current routing. Note that the map to the right does not show some of the
reroutings near Atascadero and Paso Robles, which are explained in the
Pre 1964 Signage History
In 1934, US 466 was commissioned, running
over a variety of legislative routes. Until July 1, 1964, the following
route was signed as US 466:
- Present-day Route 41 between Route 1 and US 101 near Atascadero. This
was LRN 125, defined in 1933.
- Prior to the late 1950s, LRN 125 between Atascadero and Shandon. There
may have been a time this was routed along LRN 137 between Creston and a
road 3 mi S of Creston, along what is Route 229, at least around 1938.
- Around 1959, US 466 was rerouted along present-day US 101 between
Atascadero and Paso Robles. This was LRN 2.
- Around 1959, present-day Route 46 between US 101 near Paso Robles and
present-day Route 99 near Famoso via Cholame Pass. Between Shandon and
Cholame, the route was cosigned as Route 41/US 466. The Route 46 segment
was LRN 33, defined in 1915; the Route 99 segment was LRN 4. US 466
eastbound entered Famoso via LRN 33 where it met US 99/LRN 4. US 466
eastbound followed US 99/LRN 4 southbound to Bakerfield. By the
mid-1930s, traffic on US 99/LRN 4 and US 466/LRN 33 was heavy. Removal
of at-grade railroad overpasses were highly desired and generally were a
priority for the Division of Highways on US 99/LRN 4 in San Joaquin
Valley during the 1930s. The first reference to a recommendation of a
new "railroad subway" in Famoso appears in the October 1935 CHPW guide.
US 99/US 466/LRN 4 is shown to be aligned over a new subway overpass
onto a bypass route of Famoso on the 1938 Division of Highways State
Map. The bypass route of Famoso used by US 99/US 466/LRN 4 essentially
was built on the same grade Route 99 on the Golden State Freeway
(Source: Gribblenation Blog "Former US Route 99,US Route 466, and California State Route 65 through Famoso")
- Present-day Route 58 between Bakersfield and Barstow. This was LRN 58, defined in 1919. According to Tom Fearer on the Gribblenation Blog, the routing of US 466 compared
to modern Route 58 is substantially different from Tehachapi west to
Bakersfield (the blog has a number of maps detailing the differences between Route 58 and US 466). Heading westward US 466 would have diverged from Route 58 onto Tehachapi Boulevard passing through the community of Monolith
before entering the city of Tehachapi proper. Within Tehachapi US 466
turned south on Curry Street and west on Valley Boulevard.
Originally Route 202/LRN 144 would have started heading south from US 466 on Woodford-Tehachapi Road. Woodford-Tehachapi Road heads directly
north through Old Town Tehachapi. When LRN 58 west extended west of
Mojave in 1931, it used the existing county roads through Tehachapi
Bena Road starts at the Route 58 junction with Bealville Road. US 466
would have followed Bena Road westward as it crosses under the grade
of Route 58. Bena Road and US 466 followed Caliente Creek into San
Joaquin Valley. At Tower Line Road the designation of Bena Road
changes to Edison Highway. US 466 continued west through the community
of Edison on Edison Highway. West of Edison the alignment of US 466 on
Edison Highway met LRN 143 at Weedpatch Highway. Weedpatch Highway is
now signed as Route 184. At this at-grade railroad crossing US 466 on
Edison Highway would have entered the City of Bakersfield. US 466 made
a turn towards downtown Bakersfield on Sumner Street. Originally US 466 would have met Route 178 on Sumner Street at Beale Avenue at an
at-grade intersection. Route 178 would have multiplexed US 466 west to
24th Street, today Beale Avenue is on a fly-over grade. At Union
Avenue/Golden State Avenue US 466 met US 99 and US 399. US 399 had a
northern terminus multiplexed on US 99 directly to the left on Union
Avenue. US 466 would have split right on US 99 via Golden State
Avenue, Route 178 would have followed to 24th Street until it was
realigned in 1963.
US 99/466 multiplexed through Bakersfield on Golden State Avenue on
what is now the routing of Route 204 to Route 99. From the end of
Route 204 the alignment of US 466 followed US 99 on what is now the
Route 99/Golden State Freeway to Famoso.
Source for the above: Gribblenation Blog (Tom
Fearer): Legacy of US Route 466 Part 2; Tehachapi to Bakersfield.
- Present-day I-15 (former US 91) between Barstow and the Nevada state
line. This was LRN 31, defined in 1925.
H/T: Tom Fearer (Max Rockatansky) and the crew at AARoads for helping to sort this out.
Additionally, LRN 141 was the planned rerouting for US 466 to bypass
downtown Bakersfield (back when LRN 4/US 99 (and US 399) was on the Route 204/Business Route 99 alignment) back in 1933; this rerouting only occured in the
1960s however with the construction of the freeways which are now Route 58
and Route 58/Route 99 (explaining why the definition of the route is from
LRN 4 to LRN 4: from Brundage at Route 204 to the current Route 99/Route 58/Route 178 interchange at Rosedale Highway/24th Street, where Oak Street
ends). Looking at the bridge log, the Route 204/Business Route 99 (former
LRN 4) freeway in downtown Bakersfield between LRN 141's two termini
(current Route 58 and Route 99) was built in stages: the first section,
the Union Avenue Y, was finished in 1957, followed by the Truxtun Avenue
crossing in 1959. Most of the section north of L Street and the Chester
Avenue traffic circle was also built in 1957; so the construction of the
LRN 141 (99/58) freeways occured only once CalTrans decided that the old
downtown bypass was more suitable for the through routes. The interchanges
connecting Business Route 99 with Route 99 were built in 1962 and 1963, as part of the
Bakersfield bypass. Thus by 1964, former LRN 141 had been upgraded to
freeway between Brundage Lane and Rosedale Highway; however, the portion
from Union Avenue (Route 204/Business Route 99) west to Route 99 would not be built
until 1976, at which point Route 58 was moved off of former US 466/LRN 58
(Edison Highway) and onto the new freeway, which is part of the
One contributor (Rebecca K.) opined that Twenty-Mule Team Road may be a
former routing of US 466 through Boron. This is also the claim of AARoads.
It is also the claim of a resident of Mojave since 1948, so it is likely
This route was signed in 1934.
Other WWW Links
- Casey Cooper:
- Gribblenation Blog (Tom Fearer):
Acronyms and Explanations:
- "LRN" refers to the Pre-1964 Legislative Route Number.
"US" refers to a US Shield signed route.
"I" refers to an Eisenhower Interstate signed route.
"Route" usually indicates a state shield signed route, but said route may be signed as US or I.
- Previous Federal Aid (pre-1992) categories:
Federal Aid Interstate (FAI); Federal Aid Primary (FAP);
Federal Aid Urban (FAU); and Federal Aid Secondary (FAS).
Current Functional Classifications (used for aid purposes):
Principal Arterial (PA); Minor Arterial (MA);
Collector (Col); Rural Minor Collector/Local Road (RMC/LR). Note that ISTEA repealed the previous Federal-Aid System, effective in 1992, and established the functional classification system for all public roads.
- Other frequently used terms: California Transportation Commission (Commission or CTC), California Department of Transportation (Department or Caltrans), Regional Improvement Program (RIP), Interregional Improvement Program (IIP), State Transportation Improvement Program (STIP), State Highway Operation and Protection Program (SHOPP), Traffic Congestion Relief Program (TCRP), Clean Air and Transportation Improvement Act of 1990 (Proposition 116), High Speed Passenger Train Bond Program (Proposition 1A), Highway Safety, Traffic Reduction, Air Quality, and Port Security Bond Act of 2006 (Proposition 1B), Corridor Mobility Improvement Account (CMIA), State Route 99 Bond Program (RTE or SR 99), Local Bridge Seismic Retrofit Account (LBSRA), Trade Corridors Improvement Fund (TCIF), Highway-Railroad Crossing Safety Account (HRCSA), State-Local Partnership Program (SLPP), Environmental Phase (PA&ED), Design Phase (PS&E), Right of Way (R/W), Fiscal Year (FY), Active Transportation Program (ATP), Trade Corridor Enhancement Program (TCEP), Local Partnership Program (LPP), Local Streets and Roads Program (LSRP), Solutions for Congested Corridors Program (SCCP).
© 1996-2020 Daniel P. Faigin.
Maintained by: Daniel P. Faigin