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The Great Renumbering
The Great Renumbering: California State Highways Before 1965


California Signed State Routes 

California state routes were first signed in 1934. The signed route numbers were not the same as the numbers used in the legislative definition of the routes (LRNs), and not all LRNs were signed. The general algorithm for assigning numbers was as follows:

These rules applied to the initial assignment of numbers, and where possible, to other assignment of numbers as the space was filled in. As time went on, numbers were just assigned sequentially, so it is difficult to see the pattern in present-day routes. On July 1, 1964, all state routes were renumbered to account for the assignment of numbers to Interstates, as well as to make their legislative numbers adjusted to agree with their signed numbers.

Note: A specification sheet for the pre-1964 signage was posted to the AAroads forum. See this post by Quillz on 7/16/2016.

When following links in the table below, note that the link will take you the page for the Post-1964 version of the route. Use the page menu, and look for the sections titled "Pre 1964 Signage History" (which have the graphic shown to the left) for information on the route prior to the 1964 renumbering. If the route changed numbers in 1964, this section will be talking first about the pre-1964 signed route number that corresponded to the post-1964 number of that page. Read a bit further down looking for the white bear-shield graphic. That signals the start of the discussion of the route that had the indicated number before the "Great Renumbering".

Signed Route Signage Usage LRN Current Route Part of State North or South Pre-Freeway Routing/Notes
Pre-1964 State Shield Route 1 1934- LRN 56 Route 1 Cross-State N/S Present route includes former US 101A (nee Route 3)
Pre-1964 State Shield Route 2 1934- LRN 162, LRN 161, LRN 61, LRN 59 Route 2, Route 138 Southern CA: LA E/W Portions at one time were US 66.
Pre-1964 State Shield Route 3 1934-193x LRN 60 Route 1 Southern CA: LA N/S Resigned as US101A.
Pre-1964 State Shield Route 4 1934- LRN 106, LRN 75, LRN 24 Route 4 Northern CA E/W  
Pre-1964 State Shield Route 5 1934-1963 LRN 55 Route 35, I-280 Northern CA N/S Skyline Blvd.
Pre-1964 State Shield Route 6 1934-1937 LRN 173 I-10 Southern CA: LA E/W Resigned as Route 26 when US 6 was signed circa 1937.
Pre-1964 State Shield Route 7 1934-1963 LRN 73, LRN 29, LRN 95, LRN 23, LRN 4, LRN 158, LRN 164 I-405, I-5, Route 14, US 395, Route 107 Cross-State, Southern CA N/S In LA: Sepulveda Blvd, Sawtelle Blvd. Originally ran to Nevada Border; truncated to US 101A to US 99 when US 395 and US 6 were signed.
Pre-1964 State Shield Route 8 1934-1963 LRN 5, LRN 34 Route 26, Route 88 Northern CA E/W  
Pre-1964 State Shield Route 9 1934- LRN 116, LRN 42, LRN 114, LRN 113, LRN 69, LRN 5 Route 9, Route 17, Route 85, Route 237, Route 238, Route 262, I-680, I-880 Northern CA N/S Other past signage for this route includes Route 21 and US 101A. Saratoga-Sunnyvale Road is also part of former Route 9.
Pre-1964 State Shield Route 10 1934-195? LRN 174 Route 90, I-105; Route 42, I-5 Southern CA: LA E/W Manchester Blvd, Firestone Blvd, Santa Ana Ave. Later renumbered as Route 42. Route 42 routings later reassigned to Route 90 and I-105.
Pre-1964 State Shield Route 11 1934-1978 LRN 165, LRN 205 Route 159,
Route 110,
I-110
Southern CA: LA N/S At one time cosigned with US 66 and US 6.
Pre-1964 State Shield Route 12 1934- LRN 104, LRN 51, LRN 8, LRN 53, LRN 24 Route 116, Route 12 Northern CA E/W  
Pre-1964 State Shield Route 13 1934- LRN 5, LRN 239, LRN 69 Route 17, I-880 Northern CA N/S  
Pre-1964 State Shield Route 14 1934-1963 LRN 175, Route 91 Southern CA: LA E/W Artesia Blvd, Orangethorpe. Some was cosigned as US 91.
Pre-1964 State Shield Route 15 1934-1963 LRN 167 I-710 Southern CA: LA N/S  
Pre-1964 State Shield Route 16 1934- LRN 50, LRN 11, LRN 54 Route 16, Route 84, I-5, US 50 Northern CA E/W  
Pre-1964 State Shield Route 17 193?- LRN 5, LRN 239, LRN 69 Route 17, I-880, I-580, Route 251 Northern CA N/S Not a route in 1934. Replaced Route 13. Portions later renumbered as I-880, I-580, and Route 251 (unconstructed).
Pre-1964 State Shield Route 18 1934-196? LRN 43, LRN 178, LRN 168 Route 18, Route 19, Route 38, Route 91, Route 159, Route 214, I-215 Southern CA: LA E/W Portions were cosigned as US 91. Only remaining portion is in San Bernardino.
Pre-1964 State Shield Route 19 1934- LRN 168 Route 19 Southern CA: LA N/S  
Pre-1964 State Shield Route 20 1934- LRN 15 Route 20, US 40A, US 99E Northern CA E/W  
Pre-1964 State Shield Route 21 193x-1976 LRN 5, LRN 108, LRN 75, LRN 74 I-680 Northern CA N/S Not an original 1934 sign route.
Pre-1964 State Shield Route 22 1934- LRN 179, LRN 182 Route 22 Southern CA: LA E/W  
Pre-1964 State Shield Route 23 1934- LRN 155 Route 23 Southern CA N/S  
Pre-1964 State Shield Route 24 1934- LRN 75, LRN 11, LRN 50, LRN 232, LRN 87, LRN 21 Route 4, Route 16, Route 24, Route 70, Route 84, Route 99, Route 113, Route 160, Route 242 Northern CA E/W Was once part of Alternate US 40.
Pre-1964 State Shield Route 25 1934- LRN 119 Route 25 Northern CA N/S  
Pre-1964 State Shield Route 26 1934-195?   None Southern CA E/W Ocean Blvd between Route 1 and US 101 (I-5).
195?-1963 LRN 173 I-10 Southern CA E/W Olympic Blvd. Not an original state sign route.
Pre-1964 State Shield Route 27 1934- LRN 156 Route 27 Southern CA N/S Topanga Canyon Blvd.
Pre-1964 State Shield Route 28 1934-1953 LRN 48, LRN 103, LRN 49, LRN 8, LRN 7, LRN 90 Route 12, Route 29, Route 121, Route 128, I-80, I-505 Northern CA E/W By 1953, the Lake Tahoe Route 28 was in existance.
Pre-1964 State Shield Route 29 1934- LRN 74, LRN 8, LRN 49, LRN 89, LRN 243 Route 29, Route 221, Route 175 Northern CA N/S  
Pre-1964 State Shield Route 30 193?- LRN 190, LRN 207 Route 30, Route 330, Route 210 Southern CA E/W Foothill Blvd, Claremont.
Pre-1964 State Shield Route 31 19??-198? LRN 193 I-15 Southern CA N/S Millikan Ave.
Pre-1964 State Shield Route 32 1934- LRN 47 Route 32 Northern CA E/W  
Pre-1964 State Shield Route 33 1934- LRN 138, LRN 57, LRN 10, LRN 238, LRN 41 Route 33, Route 140, Route 166 Northern CA N/S Originally started in Maricopa. Portions were US 399. Later started in Ventura.
Pre-1964 State Shield Route 34 193?- LRN 153 Route 34 Southern CA: Ventura E/W Lewis Road
Pre-1964 State Shield Route 35 1934-1963 LRN 170 I-605 Southern CA N/S Puente Ave, Workman Mill Blvd, Norwalk Blvd.
Pre-1964 State Shield Route 36 1934- LRN 35, LRN 29 Route 36 Northern CA E/W  
Pre-1964 State Shield Route 37 1934- LRN 8, LRN 6 Route 37, Route 121 Northern CA N/S Route is now E/W and includes former Route 48 (not US 48). N/S portion renumbered.
Pre-1964 State Shield Route 38 193?- LRN 190 Route 38 Southern CA E/W  
Pre-1964 State Shield Route 39 1934- LRN 191, LRN 62 Route 39 Southern CA N/S San Gabriel Canyon
Pre-1964 State Shield Route 40 Skipped to prevent conflict with US 40
Pre-1964 State Shield Route 41 1934- LRN 125, LRN 33 Route 41, Route 46 Northern CA N/S Portions were later US 466.
Pre-1964 State Shield Route 42 195?-19?? LRN 174 Route 90, I-105 Southern CA: LA E/W Manchester Blvd, Firestone Blvd, Santa Ana Ave. Renumbered from Route 10. Route 42 routings later reassigned to Route 90 and I-105.
Pre-1964 State Shield Route 43 193?- LRN 139, LRN 135 Route 43 Northern CA N/S Not an original 1934 sign route.
Pre-1964 State Shield Route 44 1934-193? LRN 20, LRN 28 Route 299 Northern CA E/W Later renumbered as US 299.
193?- LRN 83, LRN 20 Route 44 Northern CA E/W Lassen Natl Park to US 395
Pre-1964 State Shield Route 440 1934-195? LRN 20 Northern CA E/W Later renumbered as a segment of Route 44
Pre-1964 State Shield Route 45 1934- LRN 88 Route 45, Route 20 Northern CA N/S  
Pre-1964 State Shield Route 46 193?- LRN 33 Route 46 Northern CA E/W Not an original 1934 sign Route. Current Route 46 was Route 41 and US 466.
Pre-1964 State Shield Route 47 19??- LRN 167, LRN 270 Route 47 Southern CA N/S Not an original 1934 sign route. Only "Terminal Island Freeway" is constructed
Pre-1964 State Shield Route 48 1928-1935 Not assigned to prevent conflict with US 48 US 48 later renumbered as part of US 50
193?-1963 LRN 208 Route 37 Northern CA E/W  
Pre-1964 State Shield Route 49 1934- LRN 65, LRN 17, LRN 25, LRN 233 Route 49, Route 20, Route 89 Northern CA N/S  
Pre-1964 State Shield Route 50 Skipped to prevent conflict with US 50
Pre-1964 State Shield Route 51 Unknown Unknown Business Route 80 Northern CA E/W Not an original 1934 sign route
Pre-1964 State Shield Route 52 19??- LRN 279 Route 52 Southern CA: San Diego E/W Not an original 1934 sign route
Pre-1964 State Shield Route 53 19??- LRN 49 Route 53 Northern CA E/W Not an original 1934 sign route
Pre-1964 State Shield Route 54 19??- LRN 280 Route 54 Southern CA: San Diego E/W Not an original 1934 sign route
Pre-1964 State Shield Route 55 1934- LRN 43 Route 55 Southern CA N/S  
Pre-1964 State Shield Route 56 19??- LRN 278 Route 56 Southern CA: San Diego E/W Not an original 1934 sign route
Pre-1964 State Shield Route 57 19??- LRN 273, LRN 19, LRN 272 Route 57 Southern CA: Orange County N/S Not an original 1934 sign route
Pre-1964 State Shield Route 58 193x- LRN 58 Route 178, Route 58 Northern CA: Bakersfield E/W Not an original 1934 sign route Portions were US 466.
Pre-1964 State Shield Route 59 19??- LRN 123 Route 59 Northern CA N/S Not an original 1934 sign route
Pre-1964 State Shield Route 60 Skipped to prevent conflict with US 60
Pre-1964 State Shield Route 61 19??- LRN 226; LRN 258 Route 61 Northern CA N/S Not an original 1934 sign route
Pre-1964 State Shield Route 62 19??- LRN 187; LRN 218 Route 62 Southern CA (Twentynine Palms) E/W Not an original 1934 sign route
Pre-1964 State Shield Route 63 19??- LRN 132 Route 63 Northern CA (Tulare) N/S Not an original 1934 sign route
Pre-1964 State Shield Route 64 19??- LRN 265 Route 64 (unsigned) N/S Southern CA Not an original 1934 sign route
Pre-1964 State Shield Route 65 1934- LRN 129; LRN 249 Route 65, Route 69 Northern CA N/S  
Pre-1964 State Shield Route 66 Skipped to prevent conflict with US 66
Pre-1964 State Shield Route 67 19??- LRN 198 Route 67 Southern CA: San Diego N/S Not an original 1934 sign route
Pre-1964 State Shield Route 68 19??- LRN 262, LRN 171 Route 68 Northern CA: Salinas E/W Not an original 1934 sign route
Pre-1964 State Shield Route 69 No signed route before 1964. Current route was LRN 129, and part of Route 65. Now Route 245.
Pre-1964 State Shield Route 70 Skipped to prevent conflict with US 70
Pre-1964 State Shield Route 71 1934- LRN 77; LRN 78; LRN 19 Route 57, Route 60, Route 71, Route 83, Route 142, I-15, I-215 Southern CA N/S Originally started at US 80 (I-8) in San Diego. The portion betwen US 80 and Temecula was renumbered as part of US 395 in 1939, and a new Route 71 extension was created using present-day Route 79 and Route 371, along LRN 78 and LRN 277.
Pre-1964 State Shield Route 72 19??- LRN 2 Route 72 Southern CA E/W Not an original 1934 sign route. Whittier Blvd. Surface route for US 101 once freeway constructed.
Pre-1964 State Shield Route 73 19??- LRN 184 Route 73 Southern CA: Orange County N/S Not an original 1934 sign route
Pre-1964 State Shield Route 74 1934- LRN 64 Route 74 Southern CA E/W Later combined with Route 740
Pre-1964 State Shield Route 740 1934- LRN 64 Southern CA E/W Later combined with Route 74
Pre-1964 State Shield Route 75 19??- LRN 199 Route 75 Southern CA: San Diego N/S Not an original 1934 sign route
Pre-1964 State Shield Route 76 19??- LRN 195 Route 76 Southern CA: San Diego E/W Not an original 1934 sign route
Pre-1964 State Shield Route 77 19??- LRN 235 Route 77 Northern CA N/S Not an original 1934 sign route
Pre-1964 State Shield Route 78 1934- LRN 196; LRN 197; LRN 198 Route 78 Southern CA: San Diego E/W  
Pre-1964 State Shield Route 79 1934- LRN 78 Route 79, Route 71 Southern CA: San Diego N/S Between 1939 and 1973, the portion between Aguanga and Temecula was Route 71. The original definition of the route ran only to Temecula. In 1939, it was extended N to Beaumont using present-day Riverside County Sign Route R3 to Hemet, and present-day Route 79 to Beaumont.
Pre-1964 State Shield Route 80 Skipped to prevent conflict with US 80
Pre-1964 State Shield Route 81 19??- LRN 276 Route 81 Southern CA: Riverside N/S Not an original 1934 sign route. Unconstructed.
Pre-1964 State Shield Route 82 19??- LRN 2 Route 82 Northern CA N/S Not an original 1934 sign route. Route used to replace surface US 101.
Pre-1964 State Shield Route 83 19??- LRN 192 Route 83 Southern CA N/S Not an original 1934 sign route
Pre-1964 State Shield Route 84 19??- LRN 214; LRN 107 Route 84 Northern CA E/W Not an original 1934 sign route
Pre-1964 State Shield Route 85 19??- LRN 114 Route 85 Northern CA N/S Not an original 1934 sign route. Stevens Creek.
Pre-1964 State Shield Route 86 19??- LRN 26 Route 86 Southern CA N/S Not an original 1934 sign route. Route used to replace surface US 99.
Pre-1964 State Shield Route 87 19??- LRN 292 Route 87 Northern CA N/S Not an original 1934 sign route. Gonzales
Pre-1964 State Shield Route 88 19??- LRN 97 Route 88 Northern CA E/W Not an original 1934 sign route
Pre-1964 State Shield Route 89 1934- LRN 23, LRN 38; LRN 83; Route 89; Route 88 Northern CA N/S  
Pre-1964 State Shield Route 90 19??- LRN 60; LRN 221; LRN 176 Route 90 Southern CA E/W Not an original 1934 sign route. Slauson Blvd.
Pre-1964 State Shield Route 91 Skipped to prevent conflict with US 91
Pre-1964 State Shield Route 92 19??- LRN 105; LRN 259 Route 92 Northern CA E/W Not an original 1934 sign route
Pre-1964 State Shield Route 93 19??- LRN 254 Route 93 Northern CA N/S Not an original 1934 sign route
Pre-1964 State Shield Route 94 1934- LRN 200 Route 94 Southern CA E/W  
Pre-1964 State Shield Route 95 1934-193x LRN 145 US 395 Southern CA N/S  
Pre-1964 State Shield Route 96 1934-?? LRN 46; LRN 84 Route 96 Northern CA N/S  
Pre-1964 State Shield Route 97 Skipped to prevent conflict with US 97
Pre-1964 State Shield Route 98 1934-?? LRN 202 Route 98 Southern CA E/W  
Pre-1964 State Shield Route 99 Skipped to prevent conflict with US 99
Pre-1964 State Shield Route 104 1934-?? LRN 34 Route 104; Route 26 Northern CA E/W  
Pre-1964 State Shield Route 107 1942-Current LRN 164 Route 107 Southern CA N/S Southern end of Former Route 7.
Pre-1964 State Shield Route 108 1934-?? LRN 13 Route 108, Route 219 Northern CA E/W  
Pre-1964 State Shield Route 111 1934-?? LRN 187 Route 111 Southern CA N/S  
Pre-1964 State Shield Route 118 1934-?? LRN 9 Route 118, I-210 Southern CA E/W  
Pre-1964 State Shield Route 120 1934-?? LRN 66, LRN 109, LRN 40, LRN 140 Route 120 Northern CA E/W  
Pre-1964 State Shield Route 126 1934-?? LRN 79 Route 126 Southern CA E/W  
Pre-1964 State Shield Route 127 1934-?? LRN 127, LRN 128 Route 127 Southern CA N/S  
Pre-1964 State Shield Route 132 1934-?? LRN 110, LRN 65 Route 132 Northern CA E/W  
Pre-1964 State Shield Route 134 1934-?? LRN 161 Route 134 Southern CA E/W  
Pre-1964 State Shield Route 138 1934-?? LRN 59 Route 138 Southern CA E/W  
Pre-1964 State Shield Route 140 1934-?? LRN 18 Route 140 Northern CA E/W  
Pre-1964 State Shield Route 150 1934-?? LRN 149, LRN 180, LRN 80, LRN 151 Route 246, Route 154, Route 150, Route 192 Northern CA E/W  
Pre-1964 State Shield Route 152 1934-?? LRN 32 Route 152 Northern CA E/W  
Pre-1964 State Shield Route 166 1934-?? LRN 57 Route 166 Northern CA E/W  
Pre-1964 State Shield Route 178 1934-?? LRN 58, LRN 57 Route 58, Route 178 Southern CA E/W  
Pre-1964 State Shield Route 180 1934-?? LRN 263, LRN 41 Route 180 Northern CA E/W  
Pre-1964 State Shield Route 190 1934-?? LRN 127 Route 190 Southern CA E/W  
Pre-1964 State Shield Route 195 1934-?? LRN 149 US 95 Southern CA N/S  
Pre-1964 State Shield Route 198 1934-?? LRN 10 Route 198 Northern CA E/W  

Federal (US) Signed Routes 

Pre-1964 Signage Post-1964 Approximate Signage Pre-1964 Legislative Route Notes
US Highway Shield US 6 US 6, US 395, Route 14, I-5, I-110, US 91/Route 1 LRN 60; LRN 165; LRN 161; LRN 4; LRN 23; LRN 76 Sierra Highway, San Fernando Road, Figueroa, Pacific Coast Highway
US Highway Shield US 40 I-80; Route 51 (Business Route 80); US 50; Route 160 LRN 68; LRN 69; LRN 14; LRN 257; LRN 7; LRN 6; LRN 3; LRN 17; LRN 37; LRN 38  
US Highway Shield Alternate US 40 Route 113, Route 70, US 395 LRN 7; LRN 87; LRN 21  
US Highway Shield US 48 I-580, I-205 LRN 5  
US Highway Shield US 50 I-580, I-205, I-5, Route 120, Route 99, US 50 LRN 68; LRN 5; LRN 4; LRN 11; LRN 66; LRN 238  
US Highway Shield US 60 Former Route 212, I-10, Route 60 LRN 77; LRN 19; LRN 26; LRN 172; LRN 64 Portions were Ontario Blvd.
US Highway Shield US 66 I-40, I-15, Route 66, Route 30, I-210, Route 110, US 101; Route 2; Route 248 (since deleted); Route 159 (since deleted) LRN 31; LRN 9; LRN 240; LRN 161; LRN 165; LRN 2; LRN 205 Foothill Blvd, Huntington Ave, Colorado Blvd, Fair Oaks, Figueroa, Santa Monica Blvd, National Trails Highway
US Highway Shield US 70 Former Route 212, I-10 LRN 26; LRN 64 Valley Blvd
US Highway Shield US 80 I-8, Route 115 LRN 12  
US Highway Shield US 91 Route 1, Route 91, I-215, I-15 LRN 60; LRN 168; LRN 178; LRN 174; LRN 175; LRN 43; LRN 31 Lincoln Ave (Santa Ana), Lakewood Blvd, Pacific Coast Highway
US Highway Shield US 99 Route 99, I-5, I-10, Route 86, Route 163, Former Route 212, Route 273, Route 265, Route 263; Route 111; Route 204 LRN 4; LRN 161; LRN 165; LRN 2; LRN 26; LRN 3; LRN 6; LRN 7; LRN 50; LRN 232; LRN 245; LRN 87 Los Angeles: San Fernando Road.
US Highway Shield US 99W I-5 LRN 50; LRN 6; LRN 7  
US Highway Shield US 99E Route 51, Route 65, Route 99, US 50 LRN 3  
US Highway Shield Business US 99 I-5 LRN 4 Los Angeles: San Fernando Road.
US Highway Shield US 101 Route 72, US 101, Route 82, I-5, Route 51 (former routing), Route 227, Route 245 (former routing), Route 254, Route 271; Route 283; I-280 LRN 2; LRN 174; LRN 166; LRN 68; LRN 1; LRN 71 Route 82 and Route 72 are the old surface US 101. El Camino Real; Monterey Road; Ventura Blvd.
US Highway Shield Alternate US 101 Route 1, I-880 LRN 60; LRN 69; LRN 68 Pacific Coast Highway
US Highway Shield Bypass US 101 US 101 (Freeway) LRN 68  
US Highway Shield US 199 US 199 LRN 1  
US Highway Shield US 299 Route 299 LRN 20; LRN 28  
US Highway Shield US 395 Route 163, Route 15, I-15, I-215, US 395 LRN 77; LRN 78; LRN 19; LRN 43; LRN 31; LRN 145; LRN 23; LRN 95; LRN 29; LRN 73; LRN 28 Signed in 1939. Originally, the portion between US 80 (now I-8) and Temecula was Route 71.
US Highway Shield US 399 Route 33; Route 119 LRN 138; LRN 57; LRN 140  
US Highway Shield US 466 Route 41, Route 46, Route 58, Route 202; I-15 LRN 125; LRN 33; LRN 58; LRN 31  

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