California State Route 99

Route description

SR 99 is part of the California Freeway and Expressway System.^[2]

Wheeler Ridge to Sacramento

From its southern terminus at I-5 in Wheeler Ridge (Wheeler Ridge Interchange) to Sacramento, SR 99 passes through the major cities of the San Joaquin Valley, including Bakersfield, Delano, Tulare, Visalia, Fresno, Madera, Merced, Modesto, and Stockton. The entirety of this segment is now built to freeway standards with complete access control, although some older portions are not yet in compliance with Interstate Highway standards. The portion of the highway between Fresno and Modesto has been designated the 100th Infantry Battalion Memorial Highway, honoring the US Army unit that was composed almost entirely with American soldiers of Japanese ancestry when it fought during World War II.^[3]

The freeway sections connect and serve the agriculture and industry of the California Central Valley, connecting agricultural production with processing and packing businesses. Most of the freeway also parallels the Union Pacific's Fresno Subdivision.

In Sacramento, SR 99 first joins with I-80 Business as part of the Capital City Freeway, then runs concurrently with I-5. These SR 99 concurrences are not officially designated by the California Department of Transportation (Caltrans), but mapmakers often show it as such. SR 99 signage had existed along that route for motorists' convenience, but was removed in 2000, and replaced by TO SR 99 signs instead.

North Sacramento to Red Bluff

SR 99 then splits from I-5 in northern Sacramento, and then heads along the eastern segment of the Sacramento Valley through Yuba City, and Chico to its northern terminus at SR 36 near Red Bluff. A majority of SR 99 from Sacramento to Red Bluff is a two-lane highway, while segments in Yuba City and Chico that are built to freeway standards. SR 99 remains a four-lane freeway as the route leaves Sacramento County, but shortly reverts to a four-lane divided expressway as the highway crosses into Sutter County. As SR 99 reaches the junction of SR 70, the route turns northwest by north and becomes an undivided expressway with the exceptions of crossing the Feather River near Nicolaus and the interchange with SR 113, where the route then turns straight north to Yuba City.

As SR 99 crosses SR 20 as a signaled intersection, the highway becomes a four-lane freeway for 3 miles (4.8 km) before reverting to a two-lane road, passing the smaller towns of Live Oak, Fagan, and Gridley. SR 99 briefly is a local four-lane road through Gridley before continuing as a two-lane highway. SR 99 passes by the western side of the Thermalito Afterbay. SR 162 joins SR 99 for 2 miles (3.2 km) before splitting off east towards the northern end of the Thermalito Afterbay. SR 99 then transitions from a two-lane road to a four-lane divided expressway just before the interchange at SR 149 turning northwest and eventually a freeway entering the Chico city limits. As SR 99 leaves Chico, the highway reverts to a 2-lane road before crossing into Tehama County and passing through rural areas and the town of Los Molinos. The route then curves to the west and terminates at the junction with SR 36, approximately 1.5 miles (2.4 km) from I-5 in Red Bluff.

The portion between Salida and Manteca is designated the 442nd Regimental Combat Team Memorial Highway, honoring the US Army infantry regiment that, like the 100th Infantry Battalion, was also composed almost entirely of American soldiers of Japanese ancestry during World War II.^[3]

History

From initial construction to U.S. Route 99

Main article: U.S. Route 99 in California

The first state highway bond issue, approved by the state's voters in 1910,^[4] included a north–south highway through the central part of the state consisting of Route 3 through the Sacramento Valley from the Oregon state line south to Sacramento, replacing the Siskiyou Trail, and Route 4 through the San Joaquin Valley from Sacramento to Los Angeles. In addition, a second route followed the west side of the Sacramento Valley, using Route 7 from Red Bluff south to Davis and the short Route 8 east along the proposed Yolo Causeway to Sacramento. North of Bakersfield these closely paralleled some of the main lines of the Southern Pacific Railroad, including the Fresno Line, East and West Valley lines, Shasta Line and Siskiyou Line.

By 1920 paving of both routes from Red Bluff to Los Angeles was completed or in progress, including the only mountain crossing south of Red Bluff, the Ridge Route just north of Los Angeles. To the north of Red Bluff, the road was being graded but not paved over the Siskiyou Mountains into Oregon.^[5] Paving was finally completed in mid-1933, when a new alignment (now SR 263) opened through the Shasta River Canyon.^[6]

The route from Davis to Oregon via Routes 7 and 3 came to be known as part of the Pacific Highway,^[7]^[8] an auto trail organized in 1910 to connect Canada and Mexico.^[9] The split in the Sacramento Valley was known as the East and West Side highways (the latter also carrying the Pacific Highway).^[10] South of Sacramento Route 4 was the Valley Route, but the San Joaquin Valley Tourist and Travel Association held a contest to rename it, selecting Golden State Highway as the winning entry in July 1927.^[11]^[12] To this day, "Golden State Highway" is SR 99's default name in areas not given other names by the Legislature, and the name continues from its end at Wheeler Ridge on I-5 as the Golden State Freeway from there to downtown Los Angeles.

This north–south central highway became part of US 99 in 1926, as part of the new United States Numbered Highway System developed by the American Association of State Highway Officials (AASHO),^[13] though signs were not posted in California until 1928.^[14]^[15] US 99 also continued southeast from Los Angeles along a paved state highway, Route 9 and 26, to US 80 in El Centro.^[16] The paved county road south from El Centro to the Mexican border became a state highway in mid-1931,^[17] and part of US 99 in mid-1932.^[18]

An east–west split routing north of Sacramento was approved in 1929.

In mid-1929, AASHO approved a split designation between Sacramento and Red Bluff, with US 99W replacing the original western route via Davis, and US 99E following the East Side Highway (Route 3) via Roseville.^[19] A short-lived split also existed between Manteca and Stockton in the early 1930s, with US 99E becoming the main route and US 99W becoming an extended SR 120 where not concurrent with US 50.

A third highway heading north from Sacramento was constructed by the Natomas Company in the 1910s for 13 miles (21 km) along the Sacramento River levee in order to provide access to land reclaimed and sold by the company. Sacramento and Sutter counties continued the road alongside the Sacramento River and Feather River to Nicolaus, where an existing county road crossed the river on a drawbridge and ran north to the East Side Highway at Yuba City.^[20] This continuous roadway between Sacramento and Yuba City was dedicated in October 1924 as the Garden Highway.^[21]

Parts of the present SR 99 alignment between Sacramento and Yuba City were added to the state highway system in 1933, when the legislature added Route 87 (Sign Route 24,^[22] later US 40 Alternate) from Woodland north past Yuba City to northwest of Oroville,^[23] and in 1949, with the creation of Route 232 (later Sign Route 24) between Sacramento and Marysville.^[24] The final piece became Route 245 (no signed number) in 1959, connecting Route 232 near Catlett with Route 87 near Tudor,^[25] and following the old Garden Highway across the Feather River to a point east of Tudor. Despite this combined route connecting the same cities as the Garden Highway, the only other piece of the old county road taken for the state highway was a short segment just north of Sacramento, carrying Route 232 between Jibboom Street and El Centro Road.^[26]

As a state route

When the Interstate Highway System was being planned in the 1950s, there were two proposals on which way to route a freeway through the San Joaquin Valley. One was to upgrade US 99 to Interstate standards. The other alternative to build the proposed Westside Freeway, which would bypass all the Central Valley communities and thus provide a faster and more direct north–south route through the state. The latter route, which eventually became I-5, was ultimately chosen.

The implementation of the Interstate Highway System and the mid-1964 state highway renumbering ultimately sealed the fate of the U.S. Highway designation on US 99. The Interstates eventually replaced portions of US 99, causing it to be truncated at both of its ends. Since the remnant did not cross state lines, it was not allowed to keep its U.S. Highway status.

US 99 was truncated to Los Angeles, with the old route south to Mexico becoming mainly I-10 and SR 86. At the same time Route 99 was defined legislatively to run from I-5 near Wheeler Ridge to Red Bluff, but it was only marked as SR 99 between Sacramento and Yuba City, since the remainder was still US 99 or US 99E.^[14] The southern end of US 99 was moved further north to Sacramento in late 1966 and SR 99 was extended to Wheeler Ridge; the rest of former US 99 to Los Angeles was either I-5 or the locally maintained San Fernando Road.^[27]^[28] Several years later US 99 and its branches were removed altogether from California, making SR 99 signage match the legislative definition; all of US 99W, and US 99 north of Red Bluff, remained as other routes (I-80, SR 113, and I-5), while US 99E between Roseville and Marysville became SR 65. By 1968, all US 99 signs were removed or replaced with SR 99 signs following the completion of I-5.

During the 20th century, Caltrans gradually widened Route 99 into a four-lane expressway for the entire segment from Wheeler Ridge to Sacramento. As traffic levels on the highway continued to increase, the at-grade intersections on the expressway segments became extremely dangerous. Drivers on cross-streets who needed to cross the expressway often had to wait for several minutes to find suitable gaps in which to dart across heavy through traffic on Route 99 moving perpendicular to them at near-freeway speeds. Therefore, those intersections were gradually upgraded or replaced with freeway interchanges, and frontage roads were often added to provide access to adjoining lots. By 2012, there was only one remaining expressway segment with at-grade interchanges on Route 99 between Sacramento and Wheeler Ridge, in Merced County between the cities of Chowchilla and Atwater. On January 15, 2016, Caltrans officially opened the Plainsburg Road interchange, which completed the conversion of Route 99 south of Sacramento to a freeway.

Future

Caltrans' long-range plans recommend that SR 99 be upgraded to Interstate Highway standards between its southern end and Stockton (or Sacramento), which would require upgrading some substandard sections. Caltrans indicates the route would be designated as either I-7 or I-9, in accordance with the Interstate Highway System's numbering standards (being just east of and parallel to I-5).^[29]

Exit list

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions).^[30] Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County	Location	Postmile ^[30]^[31]^[32]	Exit ^[33]^[34]	Destinations	Notes
Kern KER L0.75-57.58		L0.75		I-5 south – Los Angeles	Southbound exit and northbound entrance; south end of SR 99; no access to I-5 north; former US 99 south; I-5 north exit 221
	Mettler	2.73	3	SR 166 west – Maricopa, Santa Maria
	Mettler		4	Mettler	Southbound exit and entrance
		5.34	5	David Road, Copus Road
		7.29	7	Sandrini Road
		9.30	9	Herring Road
		10.93	11	Union Avenue – Greenfield	Northbound exit and southbound entrance; former US 99 north
		13.41	13	SR 223 (Bear Mountain Boulevard) – Arvin
		15.43	15	Houghton Road
		17.50	18	SR 119 (Taft Highway) – Taft, Lamont	Former US 399
			19	Hosking Avenue
	Bakersfield	19.54	20	Panama Lane
		21.08	21	White Lane
		22.60	23	Ming Avenue
		23.51– 23.62	24	SR 58 east / Stockdale Highway, Brundage Lane – Tehachapi, Mojave	South end of SR 58 overlap; Brundage Lane was former SR 204
		24.60	25	California Avenue – Civic Center
		25.65	26A	SR 58 west (Rosedale Highway) / SR 178 east (24th Street) – Buttonwillow, Lake Isabella	North end of SR 58 overlap; signed as exit 26 southbound; northbound entrance is via Buck Owens Boulevard
			26B	Buck Owens Boulevard	Northbound exit and entrance
		26.78	27	Airport Drive – Oildale	Northbound exit and southbound entrance; serves Meadows Field Airport
		27.05	27	SR 204 south (Golden State Avenue, SR 99 Bus. south) – Bakersfield	Southbound exit and northbound entrance; former US 99 south / US 466 east
		27.87	28	Olive Drive
		R28.56	29	Norris Road – Oildale	Southbound exit and northbound entrance
		R29.88	30	SR 65 north – Porterville, Sequoia National Park	Northbound exit and southbound entrance
		R30.53	31	7th Standard Road, Merle Haggard Drive
	Cawelo	36.52	37	Lerdo Highway – Shafter
		R39.12	39	Merced Avenue
		R41.16	41	Kimberlina Road
		44.31	44	SR 46 west (Paso Robles Highway) – Wasco, Paso Robles	Former US 466 west
		R47.37	47	Whisler Road
	McFarland	49.30	49	Sherwood Avenue – McFarland	No northbound entrance
	McFarland	49.95– 50.41	50	Perkins Avenue, Elmo Highway – McFarland
		52.45	52	Pond Road
	Delano	54.48	54	Woollomes Avenue – Delano (SR 99 Bus. north)
		55.52	55	First Avenue	Northbound exit and southbound entrance
		55.52	56A	SR 155 east – Alta Sierra, Glennville	Signed as exit 56 northbound
		56.10	56B	Central Delano (11th Avenue)	Northbound exit is via exit 56
		56.54	57	Cecil Avenue	Southbound entrance is via exit 56B
Kern–Tulare county line		57.58	58	County Line Road – Delano (SR 99 Bus. south)
Tulare TUL 0.00-R53.94			60	Avenue 16	Southbound exit and entrance
		3.06	61	Avenue 24	No southbound entrance
	Earlimart	6.15	64	Avenue 48 – Earlimart
		7.17	65A	Avenue 56 (CR J22) – Ducor, Alpaugh	Signed as exit 65 northbound; former Legislative Route 135
			65B	Alpaugh (Front Street)	Southbound exit only; former US 99 south
		9.71	67	Avenue 72, Avenue 76	Signed as Avenue 72 southbound
			68	Avenue 80, Avenue 76	Southbound exit and northbound entrance
	Pixley	12.30	70A	Avenue 96 (CR J24) – Pixley, Terra Bella
		12.80	70B	Court Street	No southbound entrance; northbound entrance is via exit 71
			70C	Pixley (Main Street)	Southbound exit only
		13.33	71	Road 124	Northbound exit and entrance
		15.37	73	Avenue 120
	Tipton	18.43	76	SR 190 – Tipton, Porterville, Springville
		19.46	77	Avenue 152 (CR J26) – Tipton
		79.88	Raine Rest Area
		23.49	81	Avenue 184
		25.43	83	Avenue 200
		26.05		K Street	Closed; former northbound left exit
	Tulare	27.60	85	Paige Avenue
		28.61	86	Bardsley Avenue
		29.57	87	SR 137 (Tulare Avenue)
		30.58	88	Hillman Street, Prosperity Avenue, Blackstone Street
		31.85	89	M Street, Cartmill Avenue
				Oaks Street	Closed; former northbound exit and entrance
		33.22	91	J Street – Tulare	No northbound exit; former US 99 south
		33.94	92	Avenue 260, Avenue 264
		36.41	94	Avenue 280, Caldwell Avenue
	Visalia	R38.75	97	SR 198 (Sequoia Freeway) – Visalia, Sequoia National Park, Hanford, Lemoore	Signed as exits 96 (east) and 97 (west) northbound; SR 198 exit 101
			98A	Avenue 304 – Goshen	Northbound exit and entrance
			98A	Avenue 304	Southbound exit and entrance
		40.79	98B	Betty Drive (CR J32)
			106A	Traver	Northbound exit only
		48.71	106B	Merritt Drive (CR J36) – Traver	Signed as exit 106 southbound
		51.81	109	Avenue 384 (CR J38) – Woodlake	Warlow Rest Area
		R53.82	111	Road 12; 18th Avenue
Fresno FRE R0.00-31.61	Kingsburg	R0.95	112	SR 201 east (Sierra Street) – Kingsburg
	Kingsburg	R2.06	114	Bethel Avenue, Kamm Avenue
		R3.74	115	Mountain View Avenue (CR J40) – Caruthers, Dinuba
	Selma	R5.32	117	Second Street
	Selma	6.43	118	SR 43 south (Highland Avenue) / Floral Avenue – Hanford, Corcoran
	Fowler	9.16	121	Manning Avenue – Parlier, Reedley
		11.10	123A	Merced Street	Signed as exit 123 northbound
		11.84	123B	Adams Avenue	Southbound exit and northbound entrance
		12.40	124	Clovis Avenue
		14.51	126	American Avenue	Southbound exit and northbound entrance
		15.49– 15.86	127	Central Avenue, Chestnut Avenue
		16.93– 17.26	128	Cedar Avenue, North Avenue
	Fresno	18.54	130	Jensen Avenue	Former SR 41 south
		19.29	131	SR 41 north (Yosemite Freeway) – Yosemite	Northbound exit and southbound entrance; SR 41 south exit 126A
		19.29	131	SR 41 south (Yosemite Freeway) – Lemoore, Paso Robles	Northbound exit is via exit 130; SR 41 north exit 126A
		20.19	132A	Ventura Street, Kings Canyon Road	Former SR 180 east, earlier SR 41
		20.74	132B	Fresno Street – Civic Center
		21.01	133A	Stanislaus Street	Southbound exit and northbound entrance; former SR 180 west, earlier both directions
		22.16	133	SR 180 (Sequoia-Kings Canyon Freeway) – Mendota, Kings Canyon	Signed as exits 133A (west) and 133B (east) southbound; SR 180 exit 57A
		22.74	134	Belmont Avenue – Pine Flat Dam
		23.30	135A	Olive Avenue	Signed as exit 135 southbound
		23.85	135B	McKinley Avenue	Northbound exit and southbound entrance
		24.42	136A	North Golden State Boulevard, Clinton Avenue	Signed as exit 136 northbound; North Golden State Boulevard was former US 99 south
			136B	Princeton Avenue	Southbound exit and entrance
		25.00	137A	Shields Avenue	Southbound exit and entrance
			137B	Dakota Avenue	Southbound exit only
		26.22	138A	North Golden State Boulevard	Northbound exit and southbound entrance; former US 99 north
		26.55	138B	Ashlan Avenue	Signed as exit 138 southbound
		28.10	140	Shaw Avenue
		30.48	142	Herndon Avenue, Grantland Avenue	Northbound entrance is via exit 143
		30.99	143	Herndon Avenue (Golden State Boulevard)	Southbound exit and northbound entrance; former US 99 south
Madera MAD 0.00-29.36		R0.99	144	Avenue 7, Road 33
		R3.56	147	Avenue 9, Road 30½, Road 31½
		R7.46	151	Avenue 12, Road 29
			152	Almond Avenue	Southbound exit and entrance
		9.49	153A	Gateway Drive (SR 99 Bus. north) – Madera	Northbound exit only; former US 99 north
	Madera	10.27	153B	SR 145 (Madera Avenue) – Kerman, Firebaugh, Yosemite	Signed as exit 153 southbound
		11.01	154	Fourth Street – Central Madera
		12.13	155	Cleveland Avenue – Millerton Lake, Yosemite
		12.75	156	Avenue 16, Gateway Drive (SR 99 Bus. south) – Madera	Gateway Drive was former US 99 south
		R14.22	157	Avenue 17
		R16.33	159	Avenue 18½, Road 23
		R18.68	162	Avenue 20, Avenue 20½
			164	Road 20, Avenue 21½
	Califa	22.73	166	SR 152 west – Los Banos, Gilroy	Northbound exit is on the left; no northbound entrance
		23.77	167	Avenue 24
		24.43	168	Avenue 24½	No access across SR 99
		26.58	170	SR 233 (Robertson Boulevard) to SR 152 west / Avenue 26 – Chowchilla
		28.17	171	Road 15 – Le Grand
Merced MER 0.00-R37.30			176	Plainsburg Road, Sandy Mush Road	Opened January 2016
	Merced		179	Le Grand Road – Le Grand	Opened November 2014
			185	Mission Avenue, Campus Parkway
		13.09	186A	Childs Avenue, Motel Drive
		13.86	186B	SR 140 east – Mariposa, Yosemite	South end of SR 140 overlap
		14.08	186C	16th Street (SR 99 Bus. north)	Northbound exit only; southbound entrance is via exit 186B
		14.41	187A	G Street	Northbound exit and southbound entrance
		14.69	187B	SR 59 south (Martin Luther King Jr. Way) – Downtown Merced, Los Banos	South end of SR 59 overlap
		15.80	188	SR 59 north (V Street) / SR 140 west / R Street	North end of SR 59 / SR 140 overlap
		16.54	189	16th Street (SR 99 Bus. south)	No northbound exit
		18.51	191	Franklin Road	Northbound exit and entrance
		20.52	193	Atwater-Merced Expressway	Former exit with Buhach Road permanently closed October 2014; southbound exit and entrance under construction; serves Castle Airport
		21.61	194	Atwater (Atwater Boulevard, SR 99 Bus. north)	Northbound exit and southbound entrance
	Atwater	22.76	195	Applegate Road – Winton
	Atwater	23.46	196	Atwater Boulevard (SR 99 Bus. south) – Atwater	Southbound exit and northbound entrance
			198	Bellevue Road, Westside Boulevard (CR J18)
			200	Liberty Avenue, Sultana Drive
	Livingston	R29.00	201	Hammatt Avenue
	Livingston	R30.38	203	Winton Parkway
		R31.93	204	Collier Road
			206	South Avenue
		R34.43	207	Shanks Road – Delhi
			208	Bradbury Road
		R36.34	209	Golden State Boulevard (SR 99 Bus. north)	Northbound exit and southbound entrance
Stanislaus STA R0.00-R24.75		R0.30	Christoffersen Rest Area
	Turlock	R1.63	211	SR 165 (Lander Avenue, CR J14) – Central Turlock, Los Banos
		R3.45	213	West Main Street (CR J17) – Patterson, Central Turlock
		R4.54	214	Fulkerth Road
		R5.64	215	Monte Vista Avenue – Denair
		R6.75	217	Taylor Road (SR 99 Bus. south)
		R7.81	218	Keyes Road (CR J16) – Keyes
	Ceres	R10.04	220	Mitchell Road
			221	Fourth Street	No southbound exit
		R11.91	222	Whitmore Avenue – Hughson
	Modesto	R13.26	223A	Hatch Road east
		R13.35	223B	Hatch Road west
		R13.90	223C	South 9th Street	Southbound exit is part of exit 223; former US 99 north
		R14.47	225A	Crows Landing Road
		R15.10	225B	Tuolumne Boulevard, B Street
		R15.75	226A	Downtown Modesto	Signed as exit 226 northbound
		R16.12	226B	SR 108 / SR 132 (Maze Boulevard) – Vernalis	Northbound exit is via exit 226
		R16.83	227	Kansas Avenue
		M18.52	229	Carpenter Road, Briggsmore Avenue
		R20.22	230	Beckwith Road, Standiford Avenue
		R21.74	232	Pelandale Avenue
	Salida	R22.56	233	SR 219 (Kiernan Avenue) / Broadway – Salida, Riverbank
		R24.27	234	Hammett Road
San Joaquin SJ 0.00-38.78	Ripon	0.89	236	Main Street
		1.71	237A	Milgeo Avenue	Northbound exit and entrance
		2.37	237B	Jack Tone Road	Signed as exit 237 southbound
		4.89	240	Austin Road
				Moffat Boulevard	Closed; former northbound left exit
		5.82	241	SR 120 west to I-5 – Manteca, San Francisco	South end of SR 120 overlap; SR 120 east exit 6
	Manteca	6.65	242	SR 120 east (Yosemite Avenue) – Sonora	North end of SR 120 overlap
	Manteca	8.83	244A	Manteca (North Main Street)	Closed; former southbound exit and northbound entrance
		9.18	244B	Lathrop Road, North Main Street
		11.47	246	French Camp Road (CR J9)
	Stockton		248	Frontage Road	Closed
			250	Arch Road – Stockton Metropolitan Airport
			251	Clark Drive	Closed; former northbound exit and entrance
		16.70	252A	Mariposa Road (CR J7, SR 99 Bus. north, SR 4 Bus. west) – Escalon	Southbound exit to Mariposa Road west currently open; interchange under construction; former US 99 north
		17.22	252B	SR 4 east (Farmington Road) – Angels Camp	Closed; former south end of SR 4 overlap; former SR 4
			252B	SR 4 east (Golden Gate Avenue) – Angels Camp	South end of SR 4 overlap
		18.02	253	Dr. Martin Luther King Jr. Boulevard	Closed; former interchange with no northbound exit; former SR 26 west / Charter Way
		18.15	253	Main Street	Closed; former northbound exit only
		18.68	254A	SR 4 west to I-5 – Downtown Stockton, San Francisco	North end of SR 4 overlap; SR 4 east exit 68B
		19.29	254B	SR 26 east (Fremont Street) – Linden
		20.34	255	SR 88 east (Waterloo Road) – Jackson
		20.88	256	Cherokee Road
		21.67	257A	Wilson Way (SR 99 Bus. south) – Downtown Stockton	Southbound exit and northbound left entrance; former US 50 west / US 99 south
		21.91	257B	Frontage Road	Closed
		22.92	258	Hammer Lane (CR J8)
		24.03	259	Morada Lane
		25.42	260	Eight Mile Road
	Lodi	27.50	262	Armstrong Road
		28.48	263	Harney Lane
		29.00	264A	Cherokee Lane (SR 99 Bus. north) – Lodi	Northbound exit and southbound entrance; former US 50 east / US 99 north
		29.50	264B	SR 12 west (Kettleman Lane) – Fairfield	South end of SR 12 overlap; signed as exit 264 southbound
		30.97	266	SR 12 east – Central Lodi, San Andreas	North end of SR 12 overlap
		31.58	267A	Turner Road – Lodi (Cherokee Lane, SR 99 Bus. south)	Former US 50 west / US 99 south
		31.72	267B	Frontage Road
		32.57	268	Woodbridge Road
		33.57	269	Acampo Road
		34.58	270	Peltier Road (CR J12)
		35.60	271	Jahant Road
		36.67	272	Collier Road
		37.83	273	Liberty Road, Frontage Road
Sacramento SAC 0.12-36.86	Galt	0.33	274A	Crystal Way, Boessow Road	Northbound exit and entrance
		0.33	274A	Fairway Drive	Southbound exit and entrance
		0.79	274B	C Street – Central Galt
		1.57	275A	Elm Avenue, Simmerhorn Road (CR J10)
		1.88	275B	Pringle Avenue	Southbound exit and entrance
			275B	Ayers Lane	Northbound exit and entrance
		2.70	276	Walnut Avenue	No access across SR 99
		3.53	277	SR 104 east (Twin Cities Road, CR E13) – Jackson
		4.39	278	Mingo Road	Northbound exit and entrance
		4.39	278	West Stockton Boulevard	Southbound exit and entrance
		6.01	280	Arno Road
		7.36	281	Dillard Road
		8.96	283	Eschinger Road	Southbound exit and entrance
	Elk Grove	10.07	284	Grant Line Road (CR E2), Kammerer Road
		12.76	286	Elk Grove Boulevard (CR E13)
		13.84	287	Laguna Boulevard, Bond Road
		14.87	288	Sheldon Road
				Jacinto Road	Closed; former southbound exit and entrance
	Sacramento	15.90	289	Cosumnes River Boulevard, Calvine Road
		17.24– 17.66	291	Stockton Boulevard, Bruceville Road, Mack Road	Signed as exits 291A (Mack Road east, Bruceville Road) and 291B (Mack Road west) southbound; Stockton Boulevard was former US 50 east / US 99 north
		19.61	293	Florin Road	Signed as exits 293A (east) and 293B (west)
		20.86	294	47th Avenue	Signed as exits 294A (east) and 294B (west)
		21.57	295	Martin Luther King Jr. Boulevard	Northbound exit and southbound entrance
		21.94	296	Fruitridge Road	Northbound exit to Fruitridge Road east is via exit 295
		23.13	297	12th Avenue
		24.19	298B	Broadway	Northbound exit and southbound entrance; former US 50 / US 99
		R24.35 0.00^{[lower-alpha 1]}	298A	I-80 Bus. west (Capital City Freeway) / US 50 (El Dorado Freeway) to I-5 / SR 99 north – San Francisco, Redding, Placerville, South Lake Tahoe	Northbound exit and southbound entrance; former I-80 west; I‑80 Bus./US 50 exit 6B
		0.24^{[lower-alpha 1]}	6C^{[lower-alpha 2]}	T Street	Northbound exit and southbound entrance
				I-80 Bus. east (Capital City Freeway) – Reno	Northbound exit and southbound entrance; former I-80 east; I-5 exit 518
		Gap in route
		R32.12		I-5 to SR 99 south – Sacramento	Southbound exit and northbound entrance; I-5 exit 525B
		R32.12	306	I-5 north – Woodland, Redding	Southbound exit and northbound entrance; I-5 exit 525B
		33.36	307	Elkhorn Boulevard (CR E14) – Rio Linda
		35.37	309	Elverta Road
Sutter SUT 0.00-42.39		0.95	311	Riego Road
			North end of freeway
		5.81	316	Howsley Road – Pleasant Grove	Interchange
		R8.07	319	SR 70 north – Marysville, Oroville	Interchange; northbound exit and southbound entrance
		11.98		Nicolaus (Nicolaus Avenue, Garden Highway)	Interchange^[35]
		20.99		SR 113 south / East Tudor Road – Woodland	Interchange; East Tudor Road was former SR 99
	Yuba City	T30.63		SR 20 (Colusa Avenue) – Colusa, Yuba City, Marysville
			South end of freeway
		R31.31	342	Queens Avenue
		R33.95	344	Eager Road
			North end of freeway
Butte		11.16		SR 162 west – Butte City, Willows	South end of SR 162 overlap
		13.16		SR 162 east / Richvale Road – Oroville	North end of SR 162 overlap
			South end of freeway
		21.81		SR 149 south to SR 70 – Oroville, Marysville	Southbound exit and northbound entrance are on the left
		23.86	376	Butte College, Durham
			North end of freeway
			South end of freeway
	Chico	R30.60	383	Park Avenue, Skyway – Paradise
		R31.50	384	East 20th Street
		R32.45	385	SR 32 – Chester, Orland
		R33.28	386	East First Avenue
		R34.25	387A	Cohasset Road, Mangrove Avenue
		R34.93	387B	East Avenue
		R36.31	389	Eaton Road
			North end of freeway
Tehama TEH 0.00-24.94		4.49		CR A9 (South Avenue) to I-5 – Corning
Tehama TEH 0.00-24.94		24.94		SR 36 (Antelope Boulevard) – Red Bluff, Lassen National Park, Susanville	North end of SR 99
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Closed/former Concurrency terminus Incomplete access Unopened

Notes

1 2 Indicates that the postmile represents the distance along hidden SR 51 rather than SR 99.
↑ Exit number follows I-80 Bus. rather than SR 99

References

↑ "California Log of Bridges on State Highways". California Department of Transportation. January 1, 2006.
↑ California State Legislature. "Section 250–257". Streets and Highways Code. Legislative Counsel of California.
1 2 "2008 Named Freeways, Highways, Structures and Other Appurtenances in California" (PDF). California Department of Transportation. January 2009. Archived from the original (PDF) on October 14, 2012. Retrieved February 11, 2012.
↑ "An act authorizing the construction, acquisition, maintenance and control of a system of state highways in the State of California...", approved March 22, 1909, chapter 383, p. 647
↑ California State Automobile Association; Automobile Club of Southern California (1921). Engineers' Report to California State Automobile Association Covering the Work of the California Highway Commission for the Period 1911–1920. Howe & Peters. pp. 11–13. OCLC 228777554 – via Google Books.
↑ "Giant Bridges, Smooth Highway Replace Winding Shasta Road". Oakland Tribune. August 13, 1933.
↑ General Map of Transcontinental Routes with Principal Connections (Map). American Automobile Association. c. 1918.
↑ United States Touring Map (Map). Automobile Club of America and National Highways Association. 1924.
↑ "Canada to Mexico Road". Christian Science Monitor. September 28, 1910.
↑ "Report Gives Condition of State Roads". Oakland Tribune. September 4, 1921.
↑ "Prizes Offered for Suitable Name for Highway Through Valley". Modesto News-Herald. June 22, 1927.
↑ "'Golden State Highway' Title Selected to Replace 'Valley Route'". Modesto News-Herald. July 10, 1927.
↑ United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Cartography by U.S. Geological Survey. Bureau of Public Roads. November 11, 1926. OCLC 32889555. Retrieved November 7, 2013.
1 2 "Route Renumbering: New Green Markers Will Replaces Old Shields" (PDF). California Highways and Public Works. 43 (1–2): 11–14. March–April 1964. ISSN 0008-1159. Retrieved March 8, 2012.
↑ "California US Highways in 1928". California Highways.
↑ Auto Road Atlas (Map). Rand McNally. 1926 – via Broer Map Library.
↑ "An act establishing certain additional state highways and classifying them as secondary highways.", in effect August 14, 1931, chapter 82, p. 102: "El Centro to Calexico"
↑ Annual Report (Report). American Association of State Highway Officials. 1932. pp. 24–25. The following...were approved...on June 22, 1932: CALIFORNIA—U. S. 99 in California is extended from El Centro, its present southern terminus, to the Mexican Border.
↑ "Two Sacramento Valley Highways to be Numbered". Fresno Bee. August 28, 1929.
↑ Blow, Ben (1920). California Highways: A Descriptive Record of Road Development by the State and by Such Counties as Have Paved Highways. San Francisco: H.S. Crocker & Co. pp. 130–131, 206, 209, 273 – via Archive.org.
↑ "Yuba to Dedicate Garden Highway". Oakland Tribune. October 17, 1924.
↑ "State Routes will be Numbered and Marked with Distinctive Bear Signs". California Highways and Public Works. August 1934 – via GCB.net.
↑ "An act...relating to...the addition of certain highways to the State system.", in effect August 21, 1933, chapter 767, p. 2029: includes "State Highway Route 7 near Woodland to State Highway near Yuba City."
↑ "An act...relating to state highway routes.", in effect October 1, 1949, chapter 1467, p. 2555: "Route 207 is from Sacramento to Marysville..."; it was renumbered Route 232 in 1951 because there already was a Route 207
↑ "An act...to add certain additional mileage to the State Highway System.", in effect September 18, 1959, chapter 1062, p. 3110: "Route 245 is from Route 232 near Catlett to Route 87 near Tudor."
↑ Road Atlas: United States, Canada, Mexico (Map). Rand McNally. 1964.
↑ "Signs of the Times". Fresno Bee. August 4, 1966.
↑ Sacramento, California (Map). H.M. Gousha Company. 1967; shows only SR 99 south of Sacramento, but both US 99E and US 99W still extend north.
↑ "Long-Range Plans for Route 99" (PDF). California Department of Transportation. p. 57.
1 2 California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original (XLS file) on June 30, 2015. Retrieved June 30, 2015.
↑ "Log of Bridges on State Highways". California Department of Transportation. July 2007.
↑ "All Traffic Volumes on CSHS". California Department of Transportation. 2005 and 2006. Check date values in: |date= (help)
↑ Warring, KS (November 7, 2008). "State Route 99 Freeway Interchanges" (PDF). California Numbered Exit Uniform System. California Department of Transportation. Retrieved 2009-02-07.
↑ Warring, KS (January 28, 2008). "Interstate Business Loop 80 Freeway Interchanges" (PDF). California Numbered Exit Uniform System. California Department of Transportation. Retrieved 2009-04-06.
↑ Yune, Howard (January 19, 2011). "Last Highway 99 Upgrade on Track". Appeal-Democrat. Marysville, CA.

External links

Wikimedia Commons has media related to California State Route 99.

Route map: Bing / Google

Route 99 highway conditions at California Department of Transportation
Route 99 at California Highways
July 24, 2005, San Francisco Chronicle article on Interstate upgrade
California 99 at AARoads.com
Virtual Tour of US 99 north of Los Angeles

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