State Route 188
Click here for a key to the symbols used. An explanation of acronyms may be found at the bottom of the page.
From the international boundary near Tecate to Route 94.
Post 1964 Signage History
In 1963, Route 188 was defined as "the south end of Fallen Leaf
Lake to Route 89 near Camp Richardson." This was Fallen Leaf Road near
Lake Tahoe. Few realized it was even in the state highway system. In 1965,
Chapter 1372 deleted this routing.
In 1972, Chapter 1216 defined the current routing.
Pre 1964 Signage History
The 1964-1965 routing for this route was LRN 94, defined in 1933.
LRN 94 appeared be in the State Highway system primarily due to the fact
that off-grid political meetings were often held during the winter at
Fallen Leaf Lake.
(Source: Gribblenation Blog (Tom Fearer): Lake Tahoe Circle Tour Part 1, 10/2018)
The 1972 routing for Route 188 was not defined in 1963.
Signed Route 188 was not defined as part of the initial state signage of
routes in 1934. It is unclear what (if any) route was signed as Route 188
between 1934 and 1964.
are plans to build truck scales near Tecate. This project is fully funded
in the 2006 State Highway Operation and Protection Program (SHOPP). The
project includes Corridor Border Infrastructure (CBI) funds and Federal
Motorcarrier funds. The total estimated project cost is $23,870,000. The
project is programmed in the 2006 SHOPP for state-only matching funds for
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Overall statistics for Route 188:
- Total Length (1995): 2 miles
- Average Daily Traffic (1992): 2,750 to 4,150
- Mileage Classification: Rural: 2; Sm. Urban: 0; Urbanized: 0.
- Previous Federal Aid Mileage: FAP: 2 mi.
- Functional Classification: Prin. Arterial: 2 mi.
- Counties Traversed: San Diego.
Pre-1964 Legislative Route
In 1933, Chapter 767 defined the route from "[LRN 43] near Mr. Anderson
to the Cajon Pass-Lake Arrowhead Road". In 1935, this was added to the
highway code with the routing:
"[LRN 43] near Mr. Anderson to [LRN 59]"
This routing remained unchanged until the 1963 great renumbering. It ran
from Route 18 near Mt. Anderson to the present-day Route 138/Route 173
junction. This is signed as Route 138.
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