State Route 57
Orange Freeway
Constructed portion of State Route 57 highlighted in red
Route information
Maintained byCaltrans
Length	25.84 mi[1][2] (41.59 km)
History	State highway in 1931; numbered in 1964
Major junctions
South end	I-5 /SR 22 inOrange
Major intersections	SR 91 inAnaheim SR 60 inDiamond Bar I-10 /SR 71 inPomona
North end	I-210 /SR 210 inGlendora
Location
Country	United States
State	California
Counties	Orange,Los Angeles
Highway system
State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways
←SR 56 →SR 58

State Route 57 (SR 57), also known as theOrange Freeway for most of its length, is a north–southstate highway in theGreater Los Angeles Area of the U.S. state ofCalifornia. It connects theinterchange ofInterstate 5 (I-5) andSR 22 neardowntown Orange, locally known as theOrange Crush, to theGlendora Curve interchange with theFoothill Freeway (I-210 andSR 210) inGlendora. The highway provides a route across several spurs of thePeninsular Ranges, linking theLos Angeles Basin with thePomona Valley andSan Gabriel Valley.

A predecessor to this road ran throughBrea Canyon by the early 20th century and was added to the state highway system. The freeway was built in stages during the 1950s, one of which included the Brea Canyon Freeway; SR 57 was designated as part of the1964 state highway renumbering. The final portion of the present-day Orange Freeway was not completed until the mid-1970s. The latest piece of SR 57 to be added was formerly part of I-210, after SR 210 was legislatively extended toSan Bernardino in 1998. An unconstructed extension from Santa Ana south toHuntington Beach remains in the legal definition of SR 57, and has been studied as atoll road above theSanta Ana River.

SR 57 begins at theOrange Crush interchange near downtownOrange, where it meets the northwest–southeastSanta Ana Freeway (I-5) and the east–westGarden Grove Freeway (SR 22). The Orange Crush interchange, which had long been considered a majorbottleneck, was rebuilt in the 1990s and 2000s.^[3][4] The freeway heads north from the junction and soon crosses to the west side of theSanta Ana River, continuing north through suburban portions ofAnaheim and passing next toAnaheim Regional Transportation Intermodal Center,Angel Stadium andHonda Center. In northern Anaheim, SR 57 meets theRiverside Freeway (SR 91). SR 57 briefly passes throughPlacentia andFullerton, providing access toCalifornia State University, Fullerton. As it crossesImperial Highway (SR 90) near theBrea Mall and entersBrea, SR 57 enters more rugged terrain before climbing through Brea Canyon, the gap between theChino Hills andPuente Hills. Near the rim of the canyon, the highway curves north out of the Brea Canyon, and descends slightly to a junction with thePomona Freeway (SR 60) inDiamond Bar, right on the edge of theSan Gabriel Valley.^[5]

A shortoverlap carries SR 57 traffic on the same roadway as SR 60. The two routes head northeast through an arm of theSan Gabriel Valley; after they split, SR 57 ascends slightly and then slopes through the edge of thePuente Hills and into the west end of thePomona Valley. Here it meets theSan Bernardino Freeway (I-10) andChino Valley Freeway (SR 71) at the four-levelKellogg Hill Interchange. In the north half of that interchange, SR 57 enters theSan Jose Hills, climbing to its highest elevation before descending back into the connected San Gabriel and Pomona Valleys and ending at theGlendora Curve interchange with theFoothill Freeway (I-210) inGlendora.^[5]

High-occupancy vehicle lanes (HOV) exist in themedian of SR 57 south of SR 60 in Diamond Bar. Elevated ramps allow HOV traffic bound to or from Brea Canyon to connect with I-5 towards the southeast, SR 91 towards the west, or SR 60 towards the east without entering the main lanes.^[5][6]

SR 57 is legally eligible for theState Scenic Highway System throughBrea Canyon, betweenSR 90 andSR 60,^[7] though it has not officially been designated as a scenic highway by theCalifornia Department of Transportation.^[8] The entire route is in theCalifornia Freeway and Expressway System,^[9] and is a freeway for its entire constructed length. SR 57 is also part of theNational Highway System (NHS),^[10] a network of highways that are essential to the country's economy, defense, and mobility.^[11] The highway from SR 1 to SR 60 in Diamond Bar is officially designated as the Orange Freeway.^[12] In 2013, SR 57 had anannual average daily traffic (AADT) of 129,000 between SR 60 and Sunset Crossing Road in Diamond Bar, and 278,500 between SR 91 in Anaheim and Orangethorpe Avenue in Placentia, the latter of which was the highest AADT for the highway.^[13]

The road through Brea Canyon wasoiled dirt by the late 1910s, providing a good connection across an outbranching of thePeninsular Ranges between theLos Angeles Basin and Pomona Valley. This road left the main coast highway (Harbor Boulevard) atFullerton and followed the present Brea Boulevard and Brea Canyon Road, merging with theValley Boulevard from Los Angeles nearWalnut and continuing east toPomona via Valley andPomona Boulevards.^[14]Los Angeles County paved the road in concrete in early 1923,^[15] and in 1931 it was added to the state highway system as a branch ofRoute 19. Until then, Route 19 had connectedRoute 9 nearClaremont withRiverside, following Garey Avenue andMission Boulevard through Pomona.^[16][17]

The state built a bypass of the Valley Boulevard portion of the route in the early-to-mid-1930s, leaving the old road near Diamond Bar and heading northeast through the foothills, along the present freeway alignment and Mission Boulevard.^[18] To the south, the legislature added then-unrelated Route 180 along State College Boulevard in 1933, connectingRoute 2 (I-5) near the Santa Ana River withRoute 175 (Orangethorpe Avenue, later replaced bySR 91) near Placentia.^[19][20] By 1955, the Brea Canyon Freeway was proposed to begin at the Santa Ana Freeway (I-5) near La Veta Avenue inSanta Ana and head north, paralleling Routes 180 and 19 to Pomona.^[21][22][23] The portion northeast ofDiamond Bar into Pomona soon became part of the planned Pomona Freeway, and the name of the remainder was changed to Orange Freeway.^[24] The state legislature altered the definition of Route 19 to reflect this in 1957 by moving its south end to Santa Ana.^[25]

Then, in 1957, the northernmost part of present SR 57 was added to the state highway system as part ofRoute 240, which the legislature designated along the route planned for I-210.^[26] This became part of the proposedTemescal Freeway, later theCorona Freeway; a southerly extension of the Orange Freeway^[24] toLegislative Route 60 (SR 1) nearHuntington Beach was added in 1959 as Route 273. Also in 1959, the legislature created Route 272, extending the line of the Orange Freeway north from the Pomona Freeway to the Temescal Freeway, completing the proposed freeway corridor that is now SR 57.^[27] When the entire route, except Route 240 which was still part of I-210, was redesignated SR 57 in the1964 renumbering, none of these proposed freeways had been built; the only constructed segment was the old surface road fromFullerton towards Pomona.^[28] The part of old Route 19 east of Route 272 became part ofSR 60. As part of the same renumbering, Route 180 on State College Boulevard became Route 250,^[29] which was amended the next year to provide for its deletion once that portion of the SR 57 freeway was completed (between I-5 andSR 91).^[30]

Agroundbreaking ceremony was held in Placentia on January 30, 1967, to begin construction of the Orange Freeway.^[31] The first portion was dedicated on May 16, 1969, and opened soon after, extending north from the Riverside Freeway (SR 91) to Nutwood Avenue in Fullerton.^[32] Over the next few years, the freeway was completed from SR 91 north to I-10, and I-210 was built north to the present end of SR 57; the Pomona Freeway (SR 60), whichoverlaps it throughDiamond Bar, was constructed at the same time.^[2] The last pieces of that portion were the freeway through Brea Canyon, which opened March 13, 1972,^[33] and the four-levelKellogg Hill Interchange at I-10, which was dedicated May 1, 1972, and opened soon thereafter.^[34] Finally, the Orange Freeway was extended south from SR 91 to I-5 in the mid-1970s,^[2] allowing Route 250 to be turned back to local governments, though the subsequent deletion from the Streets and Highways Code did not take place until 1981.^[35] With the extension ofSR 210 aroundSan Bernardino in 1998, the former easternmost piece of I-210 to the Kellogg Hill Interchange instead became a northerly extension of SR 57,^[36] though it remains officially part of theInterstate Highway System.^[10]

The southerly extension to Huntington Beach remains unconstructed. In 1986, Orange County's plans were for a toll road elevated above the Santa Ana River rather than through existing neighborhoods, only extending south to theSan Diego Freeway (I-405) inCosta Mesa with connections to theCorona del Mar Freeway (SR 73); this was largely inspired by congestion onSR 55 through the Santa Ana area.^[37][38] The extension was considered by Caltrans as two 11.2-mile-long (18.0-kilometer), two-laneviaducts that would cost $950 million. The toll roadfranchise that the American Transportation Development (ATD) held for this portion of SR 57 expired in January 2001, after a request to delay the expiration until January 2007. Following this, ATD sued to restore the franchise, and this case lasted until November 2003.^[39] The termination was due to ATD not beginning the construction during the first ten years of the franchise, after it had been enacted by the state legislature.^[40]

In April 2009, theOrange County Transportation Authority continued to study the extension of SR 57, where the freeway would travel along the Santa Ana River and terminate at I-405 inFountain Valley.^[41]

The northbound widening between Katella Avenue and SR 91 was finished in 2014. To keep the flow of the northbound fifth lane which ends after the Orangewood Avenue exit and resumes after the Katella Avenue exit, Caltrans and OCTA plan to widen that 0.5 mile strip of road to add one more lane in the northbound direction.^[42]

County	Location	mi [43][1][2][13]	km	Exit [43]	Destinations	Notes
Orange	Santa Ana–Orange line	0.19	0.31	1A	I-5 south (Santa Ana Freeway) –Santa Ana	No access to I-5 north; southern terminus of SR 57; southern end ofOrange Crush interchange; I-5 north exit 107A
				♦	I-5 south	HOV access only; southbound exit and northbound entrance
		0.24	0.39	1B	SR 22 east (Garden Grove Freeway) –Orange	Southbound exit and northbound entrance; northern end ofOrange Crush interchange; SR 22 east exit 14D, west exit 14B
		0.38	0.61	1C	SR 22 west (Garden Grove Freeway) / Bristol Street / La Veta Avenue –Long Beach
	Orange	0.56	0.90	1D	Chapman Avenue –Orange	Signed as exit 1A northbound; northbound exit for traffic entering SR 57 from SR 22 only; southbound entrance runs directly to SR 22 west
		1.13	1.82	1E	Orangewood Avenue	Signed as exit 1B northbound; formerSR 51
	Anaheim	1.87	3.01	2	Katella Avenue
		2.75	4.43	3	Ball Road
		4.10	6.60	4	Lincoln Avenue
		4.71– 4.73	7.58– 7.61	5A	SR 91 east (Riverside Freeway) –Riverside	SR 91 east exit 30B, west exit 31
				5B	SR 91 west (Riverside Freeway) –Los Angeles
				♦	SR 91 west	HOV access only; southbound exit and northbound entrance
	Placentia	5.72	9.21	6A	Orangethorpe Avenue	Signed as exit 6 southbound
	Fullerton	6.57	10.57	6B	Chapman Avenue –Fullerton	Southbound exit is part of exit 7
		6.90	11.10	7	Nutwood Avenue
		7.67	12.34	8	Yorba Linda Boulevard
	Fullerton–Brea line	9.18	14.77	9	SR 90 (Imperial Highway)
	Brea	10.21	16.43	10	Lambert Road
		11.11	17.88	11	Tonner Canyon Road	Northbound exit and southbound entrance
Los Angeles	Diamond Bar	12.64	20.34	13	Brea Canyon Road	Southbound exit and northbound entrance; former SR 57
		13.66	21.98	14	Diamond Bar Boulevard
		14.90	23.98	15	Pathfinder Road
	Diamond Bar–Industry line	15.89	25.57	16	SR 60 west (Pomona Freeway) –Los Angeles	Northbound signage and southbound entrance; SR 60 east exit 24A; provides direct exit onto Brea Canyon Road
				—	SR 60 Alt. west / Brea Canyon Road	Southbound exit only
				—	SR 60 west (Pomona Freeway) –Los Angeles	South end of SR 60 overlap; left southbound exit and northbound entrance
				24B[a]	Grand Avenue –Diamond Bar
	Diamond Bar	16.33	26.28	—	SR 60 east (Pomona Freeway) –Pomona,Riverside	North end of SR 60 overlap; northbound exit and southbound entrance; southbound access is via exit 18; SR 57 north follows SR 60 east exit 25
		16.70	26.88	18	Sunset Crossing Road toSR 60 east (Pomona Freeway)	No northbound exit
	Pomona	19.80	31.87	20	Temple Avenue
	Pomona–San Dimas line	21.11– 21.34	33.97– 34.34	22A	I-10 west (San Bernardino Freeway) –Los Angeles	Signed as exit 21 northbound; southern end ofKellogg Interchange; former eastern terminus ofI-210; I-10 east exit 42A, west exit 42
				22B	I-10 east (San Bernardino Freeway) –San Bernardino
	San Dimas	21.58	34.73	22C	SR 71 south (Chino Valley Freeway) –Corona	Southbound exit and northbound entrance; northern end ofKellogg Interchange
		22.34	35.95	22D	Via Verde / Raging Waters Drive	Signed as exit 22 northbound
		23.90	38.46	24A	Covina Boulevard
		24.42	39.30	24B	Arrow Highway
	San Dimas–Glendora line	25.20	40.56	25A	Auto Centre Drive	Formerly Allen Avenue; northbound exit and southbound entrance[44]
	Glendora	25.47	40.99	25B	SR 210 east (Foothill Freeway) –San Bernardino	Northern terminus of SR 57; I-210 east exit 44A, SR 210 west exit 45; formerSR 30; future I-210 east
				25C	I-210 west (Foothill Freeway) –Pasadena
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       HOV only       Incomplete access

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Wikimedia Commons has media related toCalifornia State Route 57.

• Caltrans: State Route 57 highway conditions
• Caltrans Traffic Conditions Map
• California Highway Patrol Traffic Incidents
• Geographic data related toCalifornia State Route 57 atOpenStreetMap
• California Highways: State Route 57
• California @ AARoads – State Route 57

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