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California Highways

Chronology of California Highways

Phase IV: Building the Freeway System (1947-1962)

1947

In 1947, in response to the recommendations of the Joint Interim Commission on Highways, Roads, Streets, and Bridges, the Legislature passed the Collier-Burns Act (Chapter 11). This act:

Added 67 mi of city streets to the state highway system.
Consolidated county road administration.
Required that the state maintain highways in cities. This was a significant shift for the previously rural-oriented Division of Highways.
Raised the gasoline and diesel fuel tax to 4.5 cents per gallon.
Increased automobile registration fees from $3 to $6, with a proportionate increase in the weight taxes on trucks.
Created a fund for all highway revenues and motor vehicle taxes.
Revised apportionment of revenues from fuel taxes to cities, counties, and the state.
Directed gasoline tax and registration fee revenues toward construction of freeways in urban areas and highways in rural areas of the state.
Divided state highway construction funds with 55% allocated to the southern half of the state, and 45% to the northern half of the state. This was a significant shift from the previous 49%/51% allocation. This also provided minimum funding for each county.
Indicated (Section 600) that highways added by the act (later changes added other highways to this list) would have limited expenditures until a number of identified deficients were corrected:

Gasoline fees were again increased in 1953, 1963, 1983, 1989, 1990, 1992, 1993, and 1994, to an ultimate tax of eighteen cents per gallon.

The 1947 Statutes (PDF, 173.8 MB) and 1st ex session statutes (PDF, 2.9 MB) made the following changes. Note that the California Legislature appears to have skipped from LRN 210 (route defined in 1939, number assigned in 1943) directly to LRN 221. The routes from LRN 221 to LRN 229 were added by 1st Ex Session Chapter 11. Later acts that year created LRN 212, and LRN 213. Additional backfilling of the skipped numbers was done in 1949 (LRN 214), 1959 (LRN 216), and 1961 (LRN 218).

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 11	US 50		US 50	Clarify	Simplify wording to “From [LRN 75] near Antioch to the Nevada line near Lake Tahoe via Sacramento and Placerville” (Chapter 1233)
LRN 52	CA 131		CA 131	Extend	Change terminus from "Alto" to "[LRN 1]". (Chapter 1233)
LRN 68	Bypass US 101		US 101	Extend	Changed southern end to "[LRN 2] near Ford Road S of San Jose", and delete the paragraph relating to the Bay Bridge. (Chapter 1233)
LRN 68	CA 17		I-580	Extend	In 1947, Chapter 1233 removed the Bay Bridge approaches, and added the following third segment: "Route (b) above near Buchanan Street Extension in Albany to a point in Western Drive approximately 1,900 feet northwesterly of Scofield Avenue, Richmond.
LRN 74	CA 29		I-780 CA 29	Extend	Add a branch to the ferry in Benicia: “including a connection from Vallejo to [LRN 7] near the Carquinez Bridge.” (1st Ex Sess, Chapter 13)
LRN 158	CA 7		I-405	Extend	Extend from Culver City (Route 90) to Long Beach (Route 710), reflect LAX name change: "(a) [LRN 4] near San Fernando to [LRN 60] near ~~Mines Field~~ Los Angeles Airport(b) [LRN 60] near Los Angeles Airport to a point on [LRN 167] near Signal Hill" (1st Ex Sess, Chapter 11)
LRN 161	US 99 CA 134		I-5 CA 134	Extend	Extend (Los Angeles (US 101) to Colorado Street in Glendale (Route 134), Freeway routing) and clarify: "(a) [LRN 205] near Elysian Park in Los Angeles to a connection with [LRN 4] near Glendale.(b) [LRN 2] near Vineland Avenue ~~Cahuenga Park~~ to [LRN 4] near Glendale ~~Burbank~~(c) [LRN 4] near Glendale to [LRN 9] near Monrovia" (1st Ex Sess, Chapter 11)
LRN 165	US 6 US 66	CA 11	CA 110 I-110 CA 159	Simplify	Simplify the definition to drop any specific routing: San Pedro to "[LRN 9] near La Canada ~~via Figueroa Street and Linda Vista Avenue~~". (Chapter 1233)
LRN 167	CA 15	CA 7	I-710	Clarify	Introduce a discontinuity at (former) Route 245/US 101: "(a) Long Beach to [LRN 166]; (b) (a) above, near Los Angeles River to [LRN 26] via Atlantic Boulevard" (1st Ex Sess, Chapter 11)
LRN 172	US 60		CA 60	Clarify	Change origin to be "[LRN 2] in Los Angeles". (Chapter 1233)
LRN 196	CA 78		CA 78	Clarify	Change terminus to remove the reference to [LRN 77]: "…to ~~[LRN 77] near~~ Vista" (Chapter 1233)
The route number LRN 211 was never assigned.
LRN 212	CA 178		CA 178	Define	Define: “the Nevada-California State Line in the southern portion of Pahrump Valley to [LRN 23] near Freeman” (1st Ex Session, Chapter 13)
LRN 213	US 99		(none)	Define	Define: “to parallel approximately but not coincide with [LRN 4] near the northerly city limits of San Fernando to a point on said route near the southerly limits thereof”. Note: This route was added with no number. LRN 213 was assigned in 1949. (Chapter 1370)
The route numbers between 214 and 220 were incompletely assigned. LRN 214 was defined in 1949, LRN 216 in 1959, and LRN 218 in 1961
LRN 221	CA 90		CA 90	Define	Define: “A point on [LRN 60] near Los Angeles Airport to a point on [LRN 165] between Santa Barbara and Slauson Avenues” (1st Ex Sess, Chapter 11)
LRN 222	CA 241 (1964-1965)		(none)	Define	Define: “[LRN 165] near Adams Street to [LRN 205] near Elysian Park in Los Angeles”. (1st Ex Sess, Chapter 11)
LRN 223	CA 241 (1968-1972)	I-80	(none)	Define	Define: “a point on [LRN 2] near Division Street to [LRN 56]”. (1st Ex Sess, Chapter 11)
LRN 224	I-480	CA 480	(none)	Define	Define: “a point on [LRN 2] near the intersection of Lombard Street and Van Ness Avenue to the San Francisco-Oakland Bay Bridge approach in San Francisco”. (1st Ex Sess, Chapter 11)
LRN 225	I-280		I-280	Define	Define: “a connection between [LRN 56] and [LRN 2] near the south boundary of the City and County of San Francisco”. (1st Ex Sess, Chapter 11)
LRN 226 LRN 252*	CA 61 CA 24		CA 112 CA 61 CA 260 I-980	Define	Define: “a point in the vicinity of the intersection of Webster Street and Santa Clara Avenue in Alameda to a point on [LRN 5] in Oakland” (1st Ex Sess, Chapter 11) Extend to include “the highway from San Leandro to Oakland via Alameda and the Posey Tube”. Note: this extension “is part of [LRN 252]” (Chapter 1449)
LRN 227	CA 13		CA 13	Define	Define: “a connection between [LRN 75] near Lake Temescal in Oakland and [LRN 5] near San Leandro” (1st Ex Sess, Chapter 11)
LRN 228	CA 238		CA 238	Define	Define: “a connection between [LRN 5] and [LRN 69] near San Lorenzo” (1st Ex Sess, Chapter 11)
LRN 229	CA 186		I-380	Define	Define: “a connection between [LRN 68] and [LRN 2] near San Bruno”. (1st Ex Sess, Chapter 11)
LRN 230	CA 165		(none)	Define	Define: “[LRN 172] to [LRN 173] via Indiana Street in Los Angeles County”. (1st Ex Sess, Chapter 13)

*: Chapter 1446 in 1947 mistakenly added a segment of LRN 226 as LRN 252. This was corrected in 1949, and LRN 252 wasn't really created until 1959.

1949

The 1949 Statutes (PDF, 173.3 MB) made the following changes:

LRN	First Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 3	US 99	I-5	Change	Delete language about bridges. Change routing to “from Sacramento to the Oregon State line via Yreka” (Chapters 909 and 1467)
LRN 46	CA 96	CA 169 CA 96	Change	Change origin to "a point on [LRN 3] near the Klamath River Bridge" (Chapter 909 and 1467)
LRN 62	CA 39	CA 39	Change	Remove the segment from [LRN 2] (US 101) to [LRN 26] (US 70). (Chapter 1467)
LRN 75	CA 21	CA 21	Extend	Add a branch to Martinez as segment (b): “Route (a) above, north of Walnut Creek to Martinez” (Chapter 1467)
LRN 105	CA 92	CA 92	Extend	Combine the first two segments into "[LRN 56] near Half Moon Bay to [LRN 5] near Hayward". This was part of an act that authorized the acquisition and operation of the San Mateo-Hayward Bridge, and that they shall be operated as state highways. This change became effective once the California Toll Bridge Authority acquired the bridge. (Chapter 1044)
LRN 107	CA 84	CA 84	Extend	Change the definition to include the Dumbarton Bridge, making the terminus of segment (b) "[LRN 68] near Palo Alto". This was part of an act that authorized the acquisition and operation of the Dumbarton Bridge, and that they shall be operated as state highways. This change became effective once the California Toll Bridge Authority acquired the bridge. (Chapter 1044)
LRN 144	CA 202	CA 202	Clarify	Change "Old Town" to "Tehachapi". (Chapter 909, 1467)
LRN 160	CA 170	CA 170	Clarify	Clarify routing: "Highland Avenue, Los Angeles from ~~Cahuenga Blvd~~ [LRN 2] to ~~Santa Monica Blvd~~ [LRN 162]" (Chapter 909, 1467)
LRN 167	CA 15	I-710	Extend	Combine segments and extend to [LRN 205] (Pasadena Freeway): "Long Beach to [LRN 205] in South Pasadena" (Chapter 1467)
LRN 213	Business Route 5	(none)	Number and Redefine	Number as LRN 213 and redefine: “from a point on [LRN 4] near the northerly limits of San Fernando to a point on [LRN 4] near the southerly limits of San Fernando, approximately paralleling but not coinciding with [LRN 4]” (Chapters 909, 1467)
LRN 214	(none)	(none)	Define	Define: “[LRN 68] near Ralston Ave to [LRN 55]” (Chapter 1467)
LRN 226 LRN 252*	CA 61 CA 24	CA 112 CA 61 CA 260 I-980	Redefine	Repeal 1947 Chapter 1449 definition, and redefine: “(a) A point in the vicinity of the intersection of Davis Street and East Fourteenth Street in San Leandro, thence via Davis Street through the City of San Leandro and through the City of Oakland via Bayshore Boulevard and Doolittle Drive, thence through the City of Alameda via Webster Street and Posey Tube and any other tube or crossing to be used in conjunction with Posey Tube, to [LRN 69] in Oakland near Seventh and Harrison Streets.(b) [LRN 69] near Seventh and Harrison Streets in Oakland to [LRN 5]” (Chapter 1422)
LRN 231	(none)	(none)	Define	Define: “[LRN 165] in San Pedro to [LRN 167] in Long Beach, via the mainland portion of Long Beach Outer Harbor and Terminal Island, subject to the following conditions: […] 3. If funds from sources other than state highway funds have not been made available for the construction on all portions of said [LRN 231] that are not on the mainland prior to January 15, 1953, said [LRN 231] shall on that date cease to be a state highway and this section shall have no further force or effect. ” (Chapter 1261)
LRN 232	CA 24	(none)	Define	Define (as LRN 207): “[LRN 207] is from Sacramento to Marysville; provided, however, that Section 600 of the Streets and Highways Code shall be applicable to the route added to the State Highway System by this section the same as if said route had been added by the Collier-Burns Highway Act of 1947, and the Department of Public Works shall not be required to maintain any portion of said route until the same has been laid out and constructed as a state highway” (Chapter 1467)

*: Chapter 1446 in 1947 mistakenly added a segment of LRN 226 as LRN 252. This was corrected in 1949, and LRN 252 wasn't really created until 1959.

1951

The 1951 Statutes (V1, PDF, 133.5 MB; V2, PDF, 103.5 MB) made the following changes:

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 4	CA 4, US 99		CA 4	Transfer	Transfer the Charter Way and Mariposa Road routings in Stockton to LRN 75 when the Stockton Bypass was constructed. (Chapter 1562)
LRN 53	CA 12		CA 12	Clarify	Change "Fairfield" to "[LRN 7] near Fairfield". (Chapter 1562)
LRN 56	CA 1 CA 208		CA 1	Extend	Marin-Sonoma County line to Jenner Westport to Route 211 Rockport to Leggett (originally, Route 208) (Chapter 1588)
LRN 64	US 395	CA 74	CA 74	Extend	Extend (a) to terminate at LRN 78 near Perris. (Chapter 1562)
LRN 75	CA 21 CA 24 CA 4		CA 21 CA 24 CA 4	Clarify	Change “[LRN 5] near Stockton” to “[LRN 4] near Stockton”. (Chapter 1562)
LRN 77	CA 78	US 395	CA 78	Reroute	Changes to LRN 196 make it appears as if a 1933 routing of LRN 77 from Vista to Escondido was transferred this year to LRN 196. There were no actual changes to the text of LRN 77 itself. (Chapter 1562)
LRN 135	CA 43		CA 43	Clarify	Rewrite: "[LRN 10] at near Hanford, thence southerly in the vicinity of ~~via~~ Corcoran and Earlimart to [LRN 129] near Ducor" (Chapter 1562)
LRN 154	CA 232		CA 232	Extend	Add LRN 60 to LRN 2: "(a) The junction of [LRN 60] and Saviers Road in Ventura County, along the route of said road to [LRN 2] near El Rio." (Chapter 1562)
LRN 158	I-405		I-405	Extend	Combine the segments and extend the route from the Long Beach Freeway to the El Toro Y: "[LRN 4] near San Fernando to [LRN 2] in the vicinity of El Toro; provided, however, that Section 600 of this code shall be applicable to that portion of said route southerly of [LRN 167] near Signal Hill the same as if said portion had been added by the Collier-Burns Act of 1947, and the Department of Public Works shall not be required to maintain any portion of said route until the same has been laid out and constructed as a state highway" (Chapter 1562)
LRN 159			CA 170	Reword	Truncat and clarify the definition to be "[LRN 2] near Vineland Ave to [LRN 4] near Tujunga Wash" (Chapter 1562)
LRN 167	CA 15	CA 7	I-710	Truncate	Truncate to Huntington Drive: "… to Huntington Drive." (Chapter 1562)
LRN 171	CA 39 US 101		CA 39	Truncate	Change the terminus: "… to ~~[LRN 2] near Whittier~~ [LRN 62] at or near Buena Park" (Chapter 1562)
LRN 181	Unknown		(none)	Delete	Delete routing: "[LRN 43] to [LRN 176] near Yorba Linda via Grand Avenue and Glassell Avenue" (Chapter 1562)
LRN 183	Unknown		(none)	Delete	Delete routing: "[LRN 60] near Seal Beach to [LRN 2] near Santa Ana" (Chapter 1562)
LRN 196	CA 78		CA 78	Extend	Extend from Vista to Escondido: "…to ~~Vista~~ [LRN 77] near Escondido" (Chapter 1562)
LRN 232	CA 24		(none)	Number	Correct number: [LRN 207] -» [LRN 232]. (Chapter 1562)

1953

In 1953, the gasoline tax was increased from 4.5 to 7 cents per gallon. At the same time, the other highway users taxes were increased by a third.

The 1953 Statutes (V1, PDF, 98.7 MB; V2, PDF, 88.8 MB) made the following changes:

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 12	US 80		I-8	Clarify	Combine the segments and simplify the wording to “Point Loma to El Centro via San Diego” (Chapter 1856)
LRN 14	US 40		CA 123	Truncate	Change terminus from "Martinez" to "[LRN 7] near Crockett" (Chapter 1787)
LRN 15	CA 20		CA 20	Extend	Change origin to “[LRN 56] near Fort Bragg”. Added non-substantive language about Section 600. (Chapter 1408)
LRN 40	CA 167		CA 167	Extend	US 395 N of Mono Lake to the Nevada line, in the vicinity of the Pole Line Road. (Chapter 1786)
LRN 74	CA 29		CA 29	Clarify	Made the clause about the Benecia Ferry contingent on the acquisition by the Department of Public Works of the ferry system operated across the Carquinez Straights between the cities of Benecia and Martinez. (Chapter 1737)
LRN 75	CA 4 CA 21 CA 28		CA 4 CA 21 CA 28	Clarify	Reworded segment (b) [2] to be “Route (a) above, north of Walnut Creek to a connection with [LRN 74] in Benecia”. Mistakenly deleted (c), from [LRN 4] near Stockton to [LRN 65]. This change was contingent on the acquisition by the Department of Public Works of the ferry system operated across the Carquinez Straights between the cities of Benecia and Martinez. (Chapter 1737)
LRN 77	CA 60 CA 71	US 60 CA 71	CA 60 CA 71 I-15	Relax	Change the definition of (a) to drop the specific routings on Valley Boulevard and Pomona Boulevard. (Chapter 237)
LRN 105	CA 185		CA 185	Truncate	Truncate the definition of (b) [former (c) from "Seventh and Cypress Streets in Oakland" to "High Street in Oakland" (Chapter 1787)
LRN 119	CA 25		CA 25	Clarify	Clarify the origin and relax the terminus: "[LRN 2] near Gilroy to [LRN 10]". (Chapter 1836)
LRN 135	CA 43		CA 43	Extend	Change the terminus and routing: "[LRN 10] near Hanford, thence southerly in the vicinity of Corcoran and via Sun Rise City to the junction of [LRN 33] and [LRN 139] near Wasco ~~Earlimart to [LRN 129] near Ducor~~". (Chapter 1836)
LRN 160	CA 170		CA 180	Extend	Eliminate the specific routing: "~~Highland Avenue, Los Angeles from~~ [LRN 2] to [LRN 162] in the Hollywood Area, Los Angeles" (Chapter 1253)
LRN 178				Rewrite	Rewrite: "Lakewood Boulevard ~~Cerritos Avenue~~ to Manchester Avenue via Carson-Lincoln ~~[LRN 43] near Olive via Anaheim~~" (Chapter 1836)
LRN 202	CA 98		CA 98	Extend	Combine the segments and change origin: "[LRN 12] near Coyote Wells ~~[LRN 12] near Seeley~~ to [LRN 27] near Midway Wells via Calexico" (Chapter 1793)
LRN 209	CA 151		CA 151	Rewrite	Rewrite: "[LRN 3] near Project City ~~Station 398, according to the survey of said [LRN 3], Section B,~~ to Shasta Dam ~~Summit near Summit City~~" (Chapter 1836)
LRN 214	(none)		(none)	Delete	Deleted LRN 214 ("[LRN 68] near Ralston Ave to [LRN 55]"), operative January 1, 1955 (Chapter 1485)
LRN 221	CA 90		CA 90	Clarify, Extend	Relax and extend: “~~A point on [LRN 60] near~~ The Los Angeles International Airport to a point on [LRN 165], the Harbor Freeway, between Santa Barbara Avenue and Florence ~~Slauson~~ Avenues” (Chapter 1836)
LRN 231	(none)		(none)	Delete	Routing ceased to be a state highway, 1/15/1953 (1949 Chapter 1261 Sec 544.3)
LRN 233	CA 49		CA 49	Define	Define: “(a) High Street, Oakland, between [LRN 69] and [LRN 5] (b) [LRN 227] near the intersection of Park Boulevard, Oakland to [LRN 75] near Lafayette” Note: This definition was really for [LRN 235], but the 1953 act called it [LRN 233] (Chapter 1787) Define: “[LRN 83] near Sierraville to [LRN 21] near Vinto, via Loyalton. Provided, however, that Section 600 of the Streets and Highways Code shall be applicable to the route added to the State Highway System by this section the same as if said route had been added by the Collier-Burns Highway Act of 1947, and the Department of Public Works shall not be required to maintain any portion of said route until the same has been laid out and constructed as a state highway” Note: This is the real LRN 233. (Chapter 1791)
LRN 234	(none)		(none)	Define	Define: “…the Nevada State Line across the Sierra Nevada Mountains into the San Francisco Bay area on a route to be selected by the California Highway Commission, which route may include all or portions of any existing state highway route or routes. The commission, in determining said route, shall consider military necessities and recommendations appropriate federal authorities. [(funding wordage)]” (Chapter 1700)
LRN 235	CA 77		CA 77	Define	Define (as LRN 233): “(a) High Street, Oakland, between [LRN 69] and [LRN 5]; (b) [LRN 227] near the intersection of Park Boulevard, Oakland to [LRN 75] near Lafayette”. Note: In 1957, this was renumbered as LRN 235. (Chapter 1787)

1954

The 1954 Statutes (PDF, 19.8 MB) made the following changes:

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 75	CA 4 CA 21 CA 28		CA 4 CA 21 CA 28	Correct	Correct the deletion of (c) (Ex Session, Chapter 8)

1955

In 1955, the legislature extended the 1953 gasoline tax increases to 1960.

The 1955 Statutes (V1, PDF, 83.9 MB; V2, PDF, 110.7 MB) made the following changes:

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 15	CA 20		CA 20	Clarify	Removed non-substantive language relating to Section 600; no change in routing... which was removed later that year. (Chapter 1488)
LRN 56	CA 1		CA 1 CA 211	Clarify	Remove the language related to Section 600. Reword the definition of the last segment to be "State highway near southerly end of Marin Peninsula to [LRN 1] near Fernbridge via the coast route through Jenner, Westport, and Ferndale, including lateral connection with [LRN 1] near Leggett Valley " (Chapter 1488)
LRN 138	CA 33	US 399	CA 33 I-5	Extend	Extend and rework: "(a) [LRN 41] near Mendota to [LRN 10] near Oilfields. (b) [LRN 10] near Coalinga to [LRN 57] near Maricopa. (c) [LRN 2] in Ventura to [LRN 57] in Cuyoma Valley." (Chapter 1912)
	CA 33		CA 33	Extend	Route 198 near Oilfields to Route 180 in Mendota (Chapter 1912)
	CA 33		I-5	Extend	Route 33 near Oilfields to Route 33 (Chapter 1912)
LRN 158	CA 7		I-405	Other	Remove the language relating to section 600 (actually, it just made that language a general condition as Section 2109 of the code). (Chapter 1488)
LRN 212	CA 178		CA 178	Other	Reiterate definition; indicate that Section 600 is applicable. (Chapter 76) Remove the language relating to Section 600. (Chapter 1488)
LRN 226	CA 61 CA 24		CA 112 CA 61 CA 260 I-980	Other	Add: "526.1 Upon the completion of the additional subterranean tube between the Cities of Oakland and Alameda, in the vicinity of Webster Street, to be used in connection with the Posey Tube, both of which tubes are included in the description of [LRN 226], the department may by executive order, rule, or regulation, designate both of said tubes, and the approaches leading to or from the nearest state highway or city street, as one-way highways, and thereafter restrict said tubes and approaches to one-way traffic, proceeding in opposite directions as to each other. Upon the placing of signs notifying the public of such restrictions, any person who wilfully fails to observe such sign is guilty of a misdemeanor." (Chapter 97)
LRN 232	CA 24		(none)	Other	Remove the Section 600 language. (Chapter 1488)
LRN 233	CA 49		CA 49	Other	Remove the Section 600 language. (Chapter 1488)
LRN 236	CA 217		CA 217	Define	Define: “…a point northwest of the City of Santa Barbara on [LRN 2] to the campus of the University of California at Santa Barbara, Goleta Campus. (funding language) This route shall be a memorial to the late Senator Clarence C. Ward of Santa Barbara County and shall hereafter be known as Clarence Ward Memorial Boulevard.” (Chapter 1789)

1956

1956 saw the passage of the 1956 Federal Aid Highway Act, which created the 40,000 mi National System of Interstate and Defense Highways. The funding level for this undertaking was established at $25,000,000,000 over a thirteen year period, with increased funding for primary and secondary highways. The primary source was a 3¢ per gallon federal gasoline tax. Funds from this tax, along with funds from other federal highway user fees, were deposted into a "Highway Trust Fund". The federal share of Interstate construction costs was set at 90%, compared to the previous 50% rate.

The 1956 Statutes (PDF, 25.4 MB) made the following changes:

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 237	CA 117		I-280	Define	Define: “Junipero Serra Boulevard as it exists and as it was constructed by Joint Highway District No. 10 from its junction with [LRN 56] in Daly City to the present terminus of said highway in the City of San Bruno.” Joint Highway District No. 10 was also dissolved at this time. (Ex Sess Chapter 63)

1957

In 1957, the Division of Highways submitted a plan for a statewide freeway and expressway system to include city streets and county roads. In proposed the construction of 12,241 mi of controlled access highways serving every city with a population greater than 5,000. It would carry over half of the state's motor vehicle traffic. The state established for following criteria for route selection:

The system must connect the state's major centers of population.
The system must connect the state's primary centers of industrial activity and natural resources both with its centers of labor and materials and with its major shipping points.
The system must provide access to important military installations and defense activities.
The system must provide access to major recreational regions; national parks and monuments, and state beaches and parks; lakes; hunting and fishing areas; and to state institutions.
The system must connect as many seats of county government as is economically feasible.
The system must provide for continuity of travel into, through, and around urban areas from rural freeway approaches.
The system must provide for large traffic movements between population and industry centers within urban areas.
The system must provide the necessary capacity within the traffic corridor.
The system must connect with major highways of adjacent states.
The system must constitute an integrated system, with a minimum of stubs or spurs, to permit general traffic circulation.

The 1957 Statutes (V1, PDF, 107.2 MB; V2, PDF, 103.3 MB) made the following changes:

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 2	US 101		US 101	Clarify	Change (b) to “[LRN 2] North of Santa Maria” (Chapter 1911)
LRN 6	US 40		I-80	Extend	Change (b) to “[LRN 8] near Napa to [LRN 90] near Winters” (Chapter 36)
LRN 7	US 40		I-80 CA 113	Clarify	Extend route and simplify definition to “[LRN 69] in Albany to [LRN 3] near Red Bluff” (Chapter 36)
LRN 9	CA 118		CA 118, I-210	Clarify	In segment (a) change "[LRN 2] near Montalvo" to "[LRN 79] near Saticoy", and in (b) "San Fernando" with "Near San Fernando" (Chapter 1911)
LRN 14	US 40		CA 123	Truncate	Change terminus to “[LRN 7] in Richmond at Cutting Blvd” (Chapter 36)
LRN 15	CA 20		CA 20	Clarify	Change description to read “...via Willits, Williams, and Colusa” (Chapter 36)
LRN 17	US 40	CA 49	CA 49	Clarify	Change origin to "[LRN 3] S of Roseville" (Chapter 36)
LRN 20	US 299	CA 44	CA 299 CA 44	Clarify	Change definition to “[LRN 1] near Arcata to Lassen National Park via Weaverville and Redding” (Chapter 1911)
LRN 21	US 40A	CA 70	CA 162	Clarify	Combine two segments to make routing “[LRN 3] near Richvale to [LRN 29] near Chats via Quincy and the Beckworth Pass” (Chapter 36)
LRN 24	CA 49 and other routes		CA 49 and other routes	Clarify	Delete reference to Vallecita. (Chapter 36)
LRN 31	Unknown		US 91	Truncate	Delete segment from [LRN 26] near Colton to San Bernardino via Mt. Vernon Avenue (Chapter 1911)
LRN 35	CA 3 CA 36		CA 3 CA 36	Other	Give priority for federal funds received. (Chapter 2398)
LRN 37	US 40		I-80	Simplify	Change to "Auburn to [LRN 38] via Emigrant Gap." (Chapter 1911)
LRN 45			CA 162	Simplify	Simplify the definition to terminate at "[LRN 7] near Willows." (Chapter 1911)
LRN 56	CA 1		CA 1	Simplify	Delete the reference to "Carmel" from segment (b). (Chapter 36)
LRN 59	CA 2		CA 138	Simplify	Combine the first three segments, giving "[LRN 4] near Gorman to [LRN 31] near Cajon Pass" (Chapter 36)
LRN 60	CA 3 US 101A		CA 1	Simplify	Delete "via Oxnard". (Chapter 1911}
LRN 61	CA 2		CA 2	Simplify	Combined segments and simplify to "[LRN 162] near Avenue 36 (i.e., Route 2 slightly NE of US 99) in Los Angeles to [LRN 59] (Route 138) via Glendale and Wrightwood." (Chapter 1911)
LRN 69	CA 17		I-880 I-580 CA 251 I-80 CA 17	Reroute	Delete segment (c) and clarify (b) to "San Jose to the Richmond-San Rafael Toll Plaza" (Chapter 36)
LRN 71	US 101		US 101	Clarify	Change terminus to the "Oregon State Line" (Chapter 36)
LRN 75	CA 4 CA 21 CA 28		CA 4 CA 21 CA 28	Clarify	Change "[LRN 74] at Benecia" to "near Benecia". (Chapter 1911)
LRN 79	CA 126	US 99	CA 126	Clarify	Change terminus to "[LRN 23] near Solamint". (Chapter 1911)
LRN 87	US 40A	US 99	CA 70 CA 113 CA 99 CA 149	Extend	Combine and extend original (a) and (b), change origin of original (c), giving (a) [LRN 7] near Woodland to [LRN 21] near Oroville; (b) [LRN 21] near Wick's Corner to [LRN 3] near Chico (Chapter 36)
LRN 98	US 50 US 99E		(CA 51) Business Route 80	Clarify	Change terminus to "[LRN 3] near N Sacramento". (Chapter 1911)
LRN 106	CA 4		CA 4	Clarify	Change LRN 14 to LRN 7, and clarified the terminus as being "north of Concord" (Chapter 36)
LRN 110	CA 132		I-580	Extend	Change origin from LRN 41 to "[LRN 5] near Tracy" (Chapter 36)
LRN 137	CA 229		CA 229	Extend	Change origin: "[LRN 58] ~~[LRN 2]~~ near Santa Margarita to …" (Chapter 36)
LRN 154	CA 232		CA 232	Truncate	Remote north of [LRN 9] (Route 118), simplify the origin, and eliminate the discontinity: "[LRN 60] near El Rio to [LRN 9] near Saticoy." (Chapter 1911)
LRN 159			CA 170	Clarify	Change origin: "[LRN 2] near Riverside Drive to …" (Chapter 1911)
LRN 160	CA 134		CA 134	Clarify	Reverse order and clarify (b): “[LRN 4] near Glendale to [LRN 2] near Riverside Drive ~~Vineland Avenue~~” (Chapter 1911)
LRN 162	US 66		CA 2	Clarify	Delete east of LRN 61: "[LRN 60] near Santa Monica to [LRN 61] near Avenue 36" (Chapter 1911)
LRN 164	CA 107		CA 107	Clarify	Clarify: "[LRN 60] near at Torrance ~~via Hawthorne Avenue~~ to [LRN 158] near Culver City". (Chapter 1911)
LRN 167	CA 47		CA 47	Extend	Extend origin to [LRN 165] (Harbor Freeway): “[LRN 165] in San Pedro ~~Long Beach~~ to Huntington Drive via Long Beach” (Chapter 1911)
LRN 170	CA 35	CA 24	I-605	Extend	Extend to originate at [LRN 60]: "~~[LRN 179]~~ [LRN 60] near Seal Beach to …" (Chapter 36)
	CA 35	CA 240	I-605	Extend	Route 1 to I-405 (Chapter 36)
	CA 35		I-605	Extend	I-405 to Route 22 (Chapter 36)
LRN 172	US 60		CA 60	Clarify	Simplify terminus: "…to [LRN 19] ~~near Walnut Station~~". (Chapter 1911)
LRN 173	CA 26		I-10	Clarify	Change terminus: "… to ~~[LRN 166] near Downey Road~~ [LRN 2] near Soto Street" (Chapter 36)
LRN 174	CA 10		CA 42	Truncate	Delete (b) ([LRN 2] near Orange County Hospital to Main Street, Santa Ana via Santa Ana Boulevard); change origin of (a): "[LRN 60] west of Inglewood ~~via Manchester Avenue~~ to [LRN 2] near Miraflores". (Chapter 36) Clarify terminus: "… to [LRN 2] near Santa Ana". (Chapter 1911)
LRN 175	CA 14	US 91	CA 91	Clarify	Relax routing: “[LRN 60] near Hermosa Beach to [LRN 43] in Santa Ana Canyon ~~via Artesia Ave~~” (Chapter 36)
LRN 178	CA 18	US 91	(none)	Clarify	Clarify: “[LRN 168] near Lakewood ~~Boulevard~~ to [LRN 174] near Anaheim ~~Manchester Avenue via Carson-Lincoln~~” (Chapter 36)
LRN 179	CA 22		CA 22	Extend	Change end of route to "[LRN 43] near Orange" (Chapter 36)
LRN 182	CA 22		Former part of CA 22	Truncate	Change origin from [LRN 2] to [LRN 43] near Orange" (Chapter 1911)
LRN 190	CA 30 CA 38		I-210 CA 38	Clarify	Delete the specific routing via Highland Avenue from segment (a). (Chapter 1911)
LRN 205	CA 11	US 66	CA 110 I-110	Clarify	Relax routing: "[LRN 165] near Los Angeles River in Los Angeles to [LRN 161] in Pasadena ~~at Broadway Avenue~~" (Chapter 1911)
LRN 227	CA 13		CA 13	Clarify	Relax routing: “~~a connection between~~ [LRN 75] near Lake Temescal in Oakland and [LRN 5] ~~near San Leandro~~”. (Chapter 1911)
LRN 234	(none)		(none)	Delete	Delete routing: “…the Nevada State Line across the Sierra Nevada Mountains into the San Francisco Bay area on a route to be selected by the California Highway Commission…” (Chapter 1911)
LRN 235	CA 77		CA 77	Number; Clarify	Renumber the 1953 Chapter 1787 definition of LRN 233 as LRN 235. (Chapter 52) Rewrite (a): "(a) A connection with [LRN 69] near 42d Avenue to a connection with [LRN 5] near High Street in Oakland" (Chapter 1911)
LRN 238	I-5		I-5	Define	Define: “to extend from a point on [LRN 4] south of Bakersfield to a point on [LRN 7] near Woodland, on a route along the westerly side of the San Joaquin Valley to be selected by the California Highway Commission, which route may include all or portions of any existing state highway route or routes”. (Chapter 26)
LRN 239	I-280		I-280	Define	Define: “a point on [LRN 56] near Daly City to a point on [LRN 2] near San Jose on a route to be selected by the California Highway Commission, which route may include all or portions of any existing state highway route or routes” (Chapter 23)
LRN 240	CA 134 I-210		CA 134 I-210 CA 57	Define	Define: “[LRN 4] near Glendale to [LRN 26] near the east boundary of Los Angeles County on a route to be selected by the California Highway Commission, which route may include all or portions of any existing state highway route or routes” (Chapter 24)

1958

By 1958, freeway construction was proceeding apace. In Southern California, more than $700,690,000 had been spent on freeway construction, as illustrated by the map to the right. In 1957 and the first half of 1958, the division of highways opened a total of 53.8 miles of freeway in Southern California. There are some good articles here (page 1), here (page 2), and here (page 3). The 1958 Statutes (PDF, 27.2 MB) made the following changes:

LRN	First Signage	Other Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 167	CA 15	CA 7	CA 47 I-710	Extend	Add the San Pedro-Terminal Island Bridge: "[LRN 165] in San Pedro to Huntington Drive via Long Beach, and including a bridge with at least four lanes from San Pedro at or near Boschke Slough to Terminal Island" (Chapter 74)

1959

In 1959, the Legislature approved the 1957 Highway Commission plan. It also made the 1953 gasoline tax increases permanent. Chapter 1062 was also passed, establishing the Freeway and Expressway system and defining a number of routes. However, Chapter 1062 noted:

It is the purpose of the legislature in extending lengths of routes presently in the State Highway System and in adding routes to the State Highway System in this act that additional mileage be incorporated into the State Highway System in order that said mileage may become a part of the California Freeway and Expressway System. There shall be no expenditures made on the extensions of state highways added by this act or on any state highways added by this act other than planning, design, maintenance, right-of-way acquisition and right-of-way clearance until the 1963-64 Fiscal Year.

The 1959 Statutes (V1, PDF, 126.2 MB; V2, PDF, 143.0 MB) made the following changes:

LRN	First Signage	Present Route (R) and Signage (S)	Action	Segment
LRN 6	CA 128	CA 128	Extend	Route 113 to I-505 near Davis: Change (b) to “[LRN 49] near Napa to [LRN 7] near Davis” (Chapter 1062)
LRN 20	CA 44	CA 44	Extend	Route 89 to Route 36
	CA 139	CA 139	Extend	Route 36 to Route 139 N of Susanville
	CA 36	CA 36	Extend	Route 139 N of Susanville to US 395
LRN 26	CA 18	CA 18	Delete	Connection from Colton to San Bernardino (Chapter 1841) Note: The connection was deleted because it was redundant with LRN 275, defined by Chapter 1062, which ran from LRN 26 to LRN 190 (Route 30).
LRN 30	CA 31	I-15	Define	I-10 to Devore (Chapter 2089) Note: the original LRN 30 was defined in 1909 but the routing was abandoned... but this routing appeared to duplicate the 1959 extension of Route 193.
LRN 32	CA 152	CA 152	Extend	Route 99 to Route 65 (Chapter 1062)
LRN 35	CA 3 CA 36	CA 3 CA 36	Other