Interstate 210 and State Route 210 (California)

	File:INTERSTATE 210 08022007.jpg; Foothill Freeway is highlighted in red and green; The yellow is the former route of SR 30.
Route information
	Maintained by Caltrans
Major junctions
	SR 118 in San Fernando Valley; SR 2 in Glendale; SR 134 / SR 710 in Pasadena; SR 19 in Arcadia; I-605 in Irwindale; SR 39 in Azusa; SR 57 in Glendora; SR 66 in La Verne; I-15 in Rancho Cucamonga; I-215 in San Bernardino; SR 259 in San Bernardino; SR 18 in San Bernardino; SR 330 in Highland
Location
Country	United States
State	California
Highway system
	Southern California freeways

The Foothill Freeway is the name assigned to Interstate 210, a 'bypass' interstate about 70 miles long located in the Los Angeles Metropolitan area. Bypassing central Los Angeles via a generally west to east alignment, this freeway links many of the suburban cities and communities that surround Los Angeles to its north and east. This freeway also allows access to the San Fernando Valley, without having to pass through the more heavily traffic congested Downtown Los Angeles area.

As its name implies, its alignment is along the foothills of the San Gabriel Mountains. The freeway is completed; there is currently a 10-mile gap in San Bernardino County. After a lengthy hiatus, construction on the segment of the freeway between its junction with the Orange Freeway, SR 57 in San Dimas and the Ontario Freeway, I-15, in Rancho Cucamonga was finally completed in late 2003. At this time, the segment between the I-15 and I-215 in San Bernardino was completed in July 24, 2007.

Route description

The Foothill Freeway west terminus is at the junction with the Golden State Freeway, I-5, near Sylmar, a district of Los Angeles, at the foothills separating the San Fernando and the Santa Clarita Valley. From that point, the freeway's alignment is generally diagonal as it heads southeast through the northeastern San Fernando Valley and the Crescenta Valley before turning due south towards the junction with the Ventura Freeway, SR 134 in Pasadena. At this interchange, the number assignment of I-210, somewhat confusingly, 'transfers' to the alignment of SR 134. The physical alignment of the freeway continues south, however, ending at California Boulevard. Interstate 210 then becomes an east-west freeway (the SR 134 number assignment is dropped east of the interchange). The freeway's alignment continues east until it's junction with I-10 in Redlands.

Prior to late 2003, the Foothill Freeway's 'numbered' alignment 'transferred' to what is now the Orange Freeway SR 57 in San Dimas - although the physical alignment, as in Pasadena, continued, in this case, eastbound as SR 30 (former). Prior to late 2003, I-210's alignment was north-south after the junction in San Dimas and terminated at its intersection with the San Bernardino Freeway, I-10, the Orange Freeway, SR 57, and the Chino Valley Freeway SR 71 at the Kellogg Interchange complex.

However, in late 2003, a 20-mile segment of the Foothill Freeway east of San Dimas was completed and the I-210 numbered assignment was transferred back to the east-west segment noted above, and the SR 57 number assignment replaced the I-210 number assigment.

The segment of the Foothill Freeway between its western terminus near Sylmar and what is now a southern spur in Glendora is signed as I-210. (The former southern spur has since been re-signed as SR 57, although it has been designated as part of the Orange Freeway.) The eastern extension is signed as SR 210 between the southern spur and the Barstow Freeway, and as SR 30 (former) from there to its eastern terminus in Redlands. Caltrans has petitioned the AASHTO, the federal body that oversees the Interstate Highway System, to re-sign the entire Foothill Freeway as I-210; this petition is likely to succeed after the eastern extension was completed in July 2007.

Communities served along the Foothill Freeway

Routes intersecting the Foothill Freeway

Golden State Freeway - I-5 in Sylmar (District of Los Angeles)
Ronald Reagan Freeway - SR 118 in San Fernando
Glendale Freeway - SR 2 in Glendale
Ventura Freeway - SR 134 in Pasadena
Long Beach Freeway - SR 710 in Pasadena
Rosemead Boulevard (surface street) - SR 19 in Pasadena
San Gabriel River Freeway - I-605 in Duarte
Azusa Avenue (surface street) - SR 39 in Azusa
Orange Freeway - SR 57 in Glendora
Foothill Boulevard (surface street) - SR 66 in La Verne
Ontario Freeway - I-15 in Rancho Cucamonga
Barstow Freeway - I-215 in San Bernardino
SR 259 in San Bernardino
Waterman Avenue (surface street) - SR 18 in San Bernardino
City Creek Freeway - SR 330 in Highland
Redlands Freeway - I-10 in Redlands

References

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