Interstate 110 and State Route 110 (California)

Interstate 110 and State Route 110
Interstate 110 and State Route 110
	I-110 highlighted in red; SR 110 in purple
Route information
	Auxiliary route of I-10
	Maintained by Caltrans
Length	31.819 mi (51.208 km)
Component; highways	I-110 from San Pedro, Los Angeles to Downtown Los Angeles; SR 110 from Downtown Los Angeles to Pasadena;
Tourist; routes	Arroyo Seco Parkway
Restrictions	No trucks over 3 tons north of US 101
Major junctions
South end	SR 47 in San Pedro, Los Angeles
	I-405 in Carson; SR 91 in Harbor Gateway, Los Angeles; I-105 in South Los Angeles; I-10 in Downtown Los Angeles; US 101 in Downtown Los Angeles; I-5 in Lincoln Heights, Los Angeles;
North end	Glenarm Street in Pasadena
Location
Country	United States
State	California
Counties	Los Angeles
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; State highways in California; Interstate; US; State; Scenic; History; Pre‑1964; Unconstructed; Deleted; Freeways;

Route 110, consisting of State Route 110 (SR 110) and Interstate 110 (I-110), is a state and auxiliary Interstate Highway in the Los Angeles metropolitan area of the US state of California. The entire route connects San Pedro and the Port of Los Angeles with Downtown Los Angeles and Pasadena. The southern segment from San Pedro to I-10 in downtown Los Angeles is signed as I-110, while the northern segment to Pasadena is signed as SR 110. The entire length of I-110, as well as SR 110 south of the Four Level Interchange with US Route 101 (US 101), is the Harbor Freeway,^[2] and SR 110 north from US 101 to Pasadena is the historic Arroyo Seco Parkway, the first freeway in the western United States.^[3]

^ Cite error: The named reference trucklist was invoked but never defined (see the help page).
^ 2007 Named Freeways, Highways, Structures and Other Appurtenances in California (PDF). Caltrans. p. 71. Archived from the original (PDF) on October 14, 2012. Retrieved March 27, 2007.
^ Ryan, Colin (April 9, 2010). "America's First Freeway: The Arroyo Seco Parkway, aka, the 110". Truck Trend. El Segundo, California: Extreme Venturs, LLC. Retrieved April 10, 2018.
"The History of the Arroyo Seco Parkway". Departures. KCET. October 24, 2011. Retrieved April 10, 2010.
Kevin Break (2015). Bridges of Downtown Los Angeles. Arcadia Publishing. p. 94. ISBN 978-1-4671-3353-1.
Johnson, Davey G. (June 29, 2006). "America's First Freeway: The 110". Jalopnik. Gizmodo Media. Retrieved April 10, 2018.
National Park Service's Heritage Education Services. "Arroyo Seco Parkway". Route 66. United States Department of the Interior. Retrieved April 10, 2018.
Sproul, Suzanne (August 28, 2017). "Arroyo Seco Parkway, California's first freeway, celebrates 75 years". Los Angeles Daily News. Retrieved April 10, 2018. The Arroyo Seco Parkway, once called the Pasadena Freeway (110 Freeway) before the name was changed back in 2010, is considered by many to be the first freeway in the state and in the nation.
Rick Thomas (2008). The Arroyo Seco. Arcadia Publishing. ISBN 978-0-7385-5608-6.