What is Interstate 105 (I-105) in California?

Interstate 105 (I-105) is an east-west auxiliary Interstate Highway located in the Greater Los Angeles urban area of Southern California. It serves as a significant transportation artery within this densely populated region.

What are the common and official names for Interstate 105 in California?

Interstate 105 is commonly known as the Century Freeway, a name derived from its parallel alignment with Century Boulevard. It is also officially designated as the Glenn Anderson Freeway, honoring the late U.S. Congressman Glenn M. Anderson, who was a proponent of its construction.

How is Interstate 105 legally defined in the California Streets and Highways Code?

According to section 405 of the California Streets and Highways Code, Route 105 is legally defined as extending from Pershing Drive near El Segundo to Route 605 (which is Interstate 605).

What is the actual western terminus of I-105 as constructed, and how does it differ from its legal definition?

The constructed western terminus of I-105 is at Sepulveda Boulevard (SR 1) and Imperial Highway, near Los Angeles International Airport (LAX). While the legal definition extends to Pershing Drive, Caltrans has not adopted Imperial Highway further west as part of the state highway system, and this segment is not officially logged by the FHWA as part of the Interstate.

Where is the designated "mile 0" for Route 105 according to Caltrans, and why is it not officially part of the Interstate system?

Caltrans designates Route 105's "mile 0" along Imperial Highway, approximately 0.5 miles west of SR 1. However, this segment is neither signed as part of I-105 nor included in the Federal Highway Administration's (FHWA) Interstate Highway route logs, meaning it's not officially recognized as the start of the Interstate.

What major freeways does I-105 intersect along its route?

Interstate 105 intersects with Interstate 405 (San Diego Freeway), Interstate 110 (Harbor Freeway) at the Judge Harry Pregerson Interchange, and Interstate 710 (Long Beach Freeway).

Where does Interstate 105 terminate on its eastern end?

Interstate 105 terminates at Interstate 605 (I-605) in Norwalk, California. The high-occupancy vehicle (HOV) lanes extend slightly further east to an at-grade intersection with Studebaker Road.

Does Interstate 105 directly intersect its parent route, Interstate 5?

No, Interstate 105 does not directly intersect its parent route, Interstate 5. It adheres to numbering conventions by connecting with other auxiliary routes of I-5 that do intersect I-5, specifically I-405 and I-605.

What is the relationship between Interstate 105 and Century Boulevard?

Interstate 105 runs parallel to Century Boulevard, approximately one mile south of it. Century Boulevard itself is named for its position equivalent to 100th Street in the Los Angeles grid system, reflecting its location in the 'century' series of streets.

What public transportation system runs within the median of Interstate 105?

The Los Angeles Metro Rail C Line, formerly known as the Green Line, runs within the median of nearly the entire length of I-105. This integration allows for efficient transit connections along the freeway corridor.

Where does the Metro C Line's eastern terminus lie in relation to I-105?

The Metro C Line's eastern terminus is located at Norwalk station, which is situated at the interchange between I-105 and I-605.

How does the Metro C Line interact with I-105 near its western end?

Approximately two miles from the western end of the freeway, the Metro C Line separates from the freeway's median onto its own dedicated right-of-way at Aviation Boulevard. It then continues towards the LAX area.

What designation does I-105 hold within the California and National Highway Systems?

I-105 is designated as part of the California Freeway and Expressway System. It is also included in the National Highway System (NHS), a network of highways considered crucial for the nation's economy, defense, and mobility by the Federal Highway Administration.

What is the Judge Harry Pregerson Interchange, and where is it located?

The Judge Harry Pregerson Interchange is a complex, five-level interchange where I-105 intersects with I-110 (Harbor Freeway). It is named in honor of U.S. federal judge Harry Pregerson, who played a significant role in the freeway's development and associated legal proceedings.

When was Interstate 105 initially conceived as part of the Southern California freeway system?

Interstate 105 was initially included as part of a Caltrans master plan for the Southern California freeway system in the 1960s, although its construction and opening occurred much later.

When did the right-of-way for I-105 first appear on highway plans, and when was it designated as Route 42?

The right-of-way for what would become I-105 appeared on highway plans as early as 1947. It was named the "Century Freeway" and designated as Route 42 in 1956.

When was the current route of I-105 officially added to the Interstate Highway System?

The current route of Interstate 105 was added to the Interstate Highway System in 1968.

What factors contributed to the significant delays in the construction of I-105?

The construction of I-105 faced significant delays due to opposition from affected communities, the rise of the environmental movement in the 1960s, fiscal challenges stemming from the 1971 Sylmar earthquake, and the tax revolt in California during the late 1970s.

What was a primary source of community opposition to the freeway's construction?

A primary source of opposition came from communities, particularly those that were predominantly African-American, who were concerned about the freeway's impact on their neighborhoods and resented the effects of previous freeway projects on other minority communities.

What specific demands did communities make regarding the freeway's construction due to concerns about noise and visual blight?

Weary of the noise and visual blight typically associated with elevated freeways, many cities along the proposed route demanded that I-105 be constructed significantly below grade, essentially in a "trench."

What legal challenge was filed in 1972 concerning the construction of I-105?

In 1972, community opposition led to the filing of a federal lawsuit named *Keith v. Volpe*. This lawsuit charged violations of various civil rights protections and the National Environmental Policy Act (NEPA).

Who was Judge Harry Pregerson, and what was his role in the *Keith v. Volpe* lawsuit?

Harry Pregerson was a United States federal judge who presided over the *Keith v. Volpe* lawsuit concerning the construction of the Century Freeway. He notably continued to oversee the case even after his promotion to a higher court.

What were some of the key conditions imposed by the Consent Decree resulting from the *Keith v. Volpe* lawsuit?

The Consent Decree, amended in 1981, mandated several conditions for the freeway's development. These included conducting additional public hearings, preparing an environmental report, modifying the design to reduce lanes and intersections, improving provisions for carpooling, and incorporating a transitway, which ultimately became the Metro C Line.

What construction issue arose in Downey related to groundwater and below-grade trenching?

During construction in Downey, the failure to conduct a complete survey of groundwater deposits, combined with the 20-30 foot below-grade trench construction, resulted in buckling and cracking along the eastern sections of the route. This necessitated the installation of an elaborate pump system to manage groundwater.

What was the purpose of the Century Freeway Housing Program?

The Century Freeway Housing Program was established as a direct result of the *Keith v. Volpe* Consent Decree. Its primary purpose was to replace the housing units that were demolished to make way for the construction of the freeway.

What notable homes or buildings were demolished for the construction of I-105?

The construction of I-105 led to the demolition of several significant homes, including the childhood residences of Brian, Carl, and Dennis Wilson of The Beach Boys, the home of their bandmate David Marks, and the Downey birthplace home of musical siblings Richard and Karen Carpenter.

What is the significance of the Beach Boys Historic Landmark?

The Beach Boys Historic Landmark was constructed on the former site of the Wilson brothers' home in Hawthorne. It was designated a California Historic Landmark, recognizing its connection to the iconic musical group.

Who was Congressman Glenn M. Anderson, and how was he honored in relation to I-105?

Congressman Glenn M. Anderson was a strong advocate for the construction of the I-105 route. In recognition of his efforts, Caltrans renamed the freeway the Glenn Anderson Freeway in his honor after his death in 1994.

How has the signage at the western end of I-105 changed over time?

Initially, signs at the western end of I-105 designated El Segundo as the westbound control city. In recent years, many of these signs have been replaced or covered with "LAX Airport" signage due to the freeway's proximity to Los Angeles International Airport.

What role did I-105 play in the filming of the movie *Speed*?

Before its official opening, filmmakers utilized the then-unopened Interstate 105 for several weeks to film scenes for the 1994 action movie *Speed*, taking advantage of the empty stretch of highway.

What was the previous designation of Interstate 105 in California between 1964 and 1968?

Prior to its current designation, the I-105 number was used from 1964 to 1968 for a segment of U.S. Route 101, specifically the Santa Ana Freeway, between I-5 and its connection to I-110/I-10. This designation was reverted in 1968.

What are the planned future modifications for the High-Occupancy Vehicle (HOV) lanes on I-105?

Future plans for Interstate 105 include the conversion of its existing High-Occupancy Vehicle (HOV) lanes into High-Occupancy Toll (HOT) lanes, allowing for toll-paying vehicles to use them.

What is the projected completion timeline for the I-105 HOT lane project?

Segment 1 of the I-105 HOT lane project, covering the stretch between Sepulveda Boulevard and Central Avenue, is scheduled for completion in 2028. Segments 2 and 3 are currently in the design and engineering phases.

In which county is the entire route of Interstate 105 located?

The entire route of Interstate 105 is located within Los Angeles County, California.

What is the destination for Exit 1A on I-105?

Exit 1A on I-105 leads to Imperial Highway west. This serves as a continuation of the route beyond the freeway's official western terminus and is posted at the SR 1 interchange.

What major north-south freeway intersects I-105 near its western end?

Interstate 405 (I-405), also known as the San Diego Freeway, intersects I-105 near the border of Lennox and Hawthorne.

What is the significance of Exit 2B on I-105?

Exit 2B provides access to Interstate 405 (I-405) northbound towards Santa Monica and southbound towards Long Beach. This interchange is known as the Sadao S. Munemori Memorial Interchange.

What freeway does I-105 intersect in Lynwood, and what are the destinations for this interchange?

In Lynwood, I-105 intersects with Interstate 710 (I-710), the Long Beach Freeway. This interchange provides access to Pasadena via I-710 North and Long Beach via I-710 South.

What state route does I-105 intersect in Downey?

Interstate 105 (I-105) intersects with California State Route 19 (SR 19), commonly known as Lakewood Boulevard, within the city of Downey.

What is the eastern terminus for the non-HOV traffic on I-105?

The eastern terminus for the standard, non-HOV lanes of Interstate 105 is at Interstate 605 (I-605) in Norwalk.

What are the destinations for the interchange between I-105 and I-605?

The interchange between I-105 and I-605 provides access to I-605 North, leading towards Pasadena, and I-605 South, leading towards Long Beach.

What special designation applies to exits 18B and 17 on I-105 near the eastern terminus?

Exits 18B (leading to I-605 North) and 17 (Bellflower Boulevard) are part of the High-Occupancy Vehicle (HOV) lane system and are designated as HOV-only exits, meaning they are primarily for vehicles with multiple occupants.

What is the final intersection for the HOV lanes of I-105?

The High-Occupancy Vehicle (HOV) lanes of Interstate 105 extend to an at-grade intersection with Studebaker Road in Norwalk, marking the easternmost point of the HOV system on this freeway.

What related portals are mentioned in the 'See also' section of the article?

The 'See also' section mentions the California Roads portal and the Greater Los Angeles portal, providing links to related topics and information.

What official resources are provided in the 'External links' section for checking traffic conditions and incidents?

The 'External links' section provides links to Caltrans for checking I-105 highway conditions and traffic maps, as well as the California Highway Patrol for real-time traffic incident information.

What international and national databases are referenced for authority control of Interstate 105 (California)?

The article references international authority control databases such as VIAF and FAST. National databases include the U.S. Library of Congress and the National Library of Israel, along with Yale's LUX collections.

How does Interstate 105 relate to the Los Angeles Metro C Line?

The Los Angeles Metro Rail C Line (formerly the Green Line) runs in the median of nearly the entire length of I-105, integrating public transit directly with the freeway corridor.

What is the significance of the 'Century Freeway' name?

The freeway is commonly known as the Century Freeway because it runs parallel to Century Boulevard. Century Boulevard itself is named for its position equivalent to 100th Street in the Los Angeles grid system.

What historical event in 1971 impacted Caltrans' construction efforts for I-105?

The 1971 Sylmar earthquake contributed to fiscal difficulties for Caltrans, further hampering construction efforts for projects like I-105.

Interstate 105 California Wiki: Interstate 105: The Century Freeway Chronicle

Dive in with Flashcard Learning!

When you are ready...
🎮 Play the Wiki2Web Clarity Challenge Game🎮

Route Description

Geographic Span

Interstate 105 (I-105), commonly known as the Century Freeway and officially the Glenn Anderson Freeway, is a significant east-west auxiliary Interstate Highway in the Greater Los Angeles area of Southern California. It extends from State Route 1 (SR 1) near El Segundo and Los Angeles International Airport (LAX) eastward to Studebaker Road in the City of Norwalk.

Parallel Pathways

The freeway largely parallels Imperial Highway and is situated one mile south of Century Boulevard, from which it derives its original name. Century Boulevard itself is named for its position corresponding to 100th Street in the Los Angeles grid system.

Termini and Connections

Its western terminus is at Sepulveda Boulevard (SR 1) near LAX. While the state legal definition ends at I-605 in Norwalk, the freeway's HOV lanes extend slightly further east to an at-grade intersection with Studebaker Road. Notably, I-105 does not directly intersect its parent route, I-5, but connects to auxiliary routes of I-5 that do intersect I-5, namely I-405 and I-605.

History & Development

Early Planning and Delays

I-105 was conceived as part of a 1960s Caltrans master plan for Southern California's freeway system but faced significant delays. Its right-of-way appeared on plans as early as 1947, but it wasn't officially named the "Century Freeway" until 1956 and was initially designated Route 42. The current route was added to the Interstate system in 1968.

Community Opposition and Legal Battles

Community opposition, particularly from predominantly African-American neighborhoods impacted by planned demolitions, led to route modifications and legal challenges. The landmark lawsuit Keith v. Volpe (1972) cited civil rights and environmental law violations. Judge Harry Pregerson's involvement was pivotal, leading to a consent decree that mandated design changes, including a transitway (now the Metro C Line), below-grade construction in some areas, and housing replacement programs.

Compliance with NEPA and CEQA.
Preparation of environmental reports.
Design alterations: reduced lanes, improved carpooling, and provision for a transitway.
Construction of a portion below grade to mitigate noise pollution.

Construction Challenges

Construction, which began in the 1980s, encountered issues such as groundwater deposits and below-grade trenching, leading to structural problems like buckling and cracking. An elaborate pumping system was installed to manage water issues along the eastern sections.

Century Freeway Housing Program

A unique outcome of the Keith v. Volpe decree was the Century Freeway Housing Program. This initiative, managed by the California Department of Housing and Community Development, aimed to replace housing that was demolished for the freeway's construction, addressing community displacement.

Cultural Landmarks

The freeway's path led to the demolition of homes significant to musical history, including the childhood residences of the Wilson brothers of The Beach Boys and the Carpenter siblings. The site of the Wilson home is now marked by the Beach Boys Historic Landmark.

Key Features & Integration

Judge Harry Pregerson Interchange

This complex, multi-level interchange connects I-105 with the Harbor Freeway (I-110). It is named in honor of Judge Harry Pregerson, who played a crucial role in overseeing the freeway's legal challenges and ensuring community benefits were included in its development.

Metro C Line Integration

A defining characteristic of I-105 is the Los Angeles Metro Rail C Line (formerly the Green Line), which runs in the median of nearly the entire freeway's length. The C Line's eastern terminus is at Norwalk station, adjacent to the I-105/I-605 interchange. This integration highlights a forward-thinking approach to urban transit planning.

Filming Location

Prior to its opening, the undeveloped freeway corridor served as a unique filming location for the 1994 action film Speed, showcasing the scale and potential of the new infrastructure.

Exit List

The following table details the major exits and connections along Interstate 105. Mileage is approximate and based on Caltrans data.

Location	mi	km	Exit	Destinations	Notes
El Segundo / Los Angeles	0.00	0.00	1A	Imperial Highway west	Continuation beyond western terminus; posted at SR 1 interchange
	0.05	0.080		California Street	At-grade intersection
			West end of freeway
	0.50	0.80	1	Imperial Highway east	Signed western terminus
	El Segundo / Los Angeles	0.50	0.80	1B	SR 1 south (Sepulveda Blvd)	Westbound signage
	El Segundo / Los Angeles	0.50	0.80	1C	SR 1 north (Sepulveda Blvd) – LAX Airport	Westbound signage
	0.99	1.59	1D	Nash St / LAX Airport Alt. Exit	Westbound exit & eastbound entrance
	2.01	3.23	2A	La Cienega Blvd / Aviation Blvd	Westbound exit & eastbound entrance
Hawthorne / Lennox / Inglewood	2.01–2.11	3.23–3.40	2B	I-405 (San Diego Fwy) – Santa Monica, Long Beach	Pregerson Interchange; I-405 north exit 45A, south exit 45
Hawthorne / Lennox / Inglewood	3.32	5.34	3	Hawthorne Blvd / Prairie Ave	Hawthorne Blvd not signed eastbound
Hawthorne	4.71	7.58	5	Crenshaw Blvd
Los Angeles / West Athens	6.77	10.90	7A	Vermont Ave
Los Angeles / West Athens	7.39	11.89	7B	I-110 (Harbor Fwy) – Los Angeles, San Pedro	Pregerson Interchange; I-110 north exits 14A-B, south exit 14A
	7.39	11.89	—	I-110 Express Lanes north	Two-lane left exit; left tolled, right HOV free
Los Angeles / Willowbrook	8.90	14.32	9	Central Ave
Willowbrook	9.78	15.74	10	Wilmington Ave
Lynwood	11.51	18.52	12	I-710 (Long Beach Fwy) – Pasadena, Long Beach	I-710 north exits 11A-B, south exit 11A
Paramount	13.47	21.68	13	I-605 (San Gabriel River Fwy) – Pasadena, Long Beach	Eastern terminus for non-HOV traffic; I-605 exit 9B
Paramount	14.13	22.74	14	Garfield Ave	Eastbound exit & westbound entrance
Paramount	14.65	23.58	15	Paramount Blvd	Westbound exit & eastbound entrance
Paramount	15.67	25.22	16	SR 19 (Lakewood Blvd)
Norwalk	17.82	28.68	18A	I-605 south (San Gabriel River Fwy)	Includes direct exit to Rosecrans Ave
Norwalk	17.82	28.68	18B	I-605 north (San Gabriel River Fwy)
Norwalk	17.91	29.21	★	Hoxie Ave – Norwalk Metro Station	HOV exits only; eastbound entrance from Hoxie Ave
Norwalk	18.15	29.21	★	Studebaker Rd	Eastern terminus of I-105 HOV lanes; at-grade intersection
Electronic toll collection HOV only Incomplete access 1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Future Developments

Express Lanes Conversion

Plans are underway to convert the existing High-Occupancy Vehicle (HOV) lanes on I-105 into High-Occupancy Toll (HOT) lanes. This initiative aims to provide more flexible transportation options and manage traffic flow more effectively. The project is being implemented in segments, with ongoing design and engineering phases for various sections.

Caltrans: I-105 highway conditions
Caltrans Traffic Conditions Map
California Highway Patrol Traffic Incidents
California @ AARoads.com - Interstate 105
California Highways: I-105
Interstate 105 @ Asphaltplanet.ca
Wikimedia Commons: Interstate 105 (California) Media

Teacher's Corner

Edit and Print this course in the Wiki2Web Teacher Studio

Edit and Print Materials from this study in the wiki2web studio

Click here to open the "Interstate 105 California" Wiki2Web Studio curriculum kit

Use the free Wiki2web Studio to generate printable flashcards, worksheets, exams, and export your materials as a web page or an interactive game.

True or False?

Test Your Knowledge!

Gamer's Corner

Are you ready for the Wiki2Web Clarity Challenge?

Learn about interstate_105_california while playing the wiki2web Clarity Challenge game.

Unlock the mystery image and prove your knowledge by earning trophies. This simple game is addictively fun and is a great way to learn!

Play now

Explore More Topics

Discover other topics to study!

order of muhammad

airspace

united states attorney

l.a. confidential film

1980 australian drivers championship

running

common sense

san diego air space museum

fortune 500

lutheranism

References

A full list of references for this article are available at the Interstate 105 (California) Wikipedia page

Feedback & Support

To report an issue with this page, or to find out ways to support the mission, please click here.

Disclaimer

Important Notice

This page was generated by an Artificial Intelligence and is intended for informational and educational purposes only. The content is based on a snapshot of publicly available data from Wikipedia and may not be entirely accurate, complete, or up-to-date.

This is not professional advice. The information provided on this website is not a substitute for professional engineering, urban planning, or transportation consultation. Always refer to official documentation and consult with qualified professionals for specific project needs.

The creators of this page are not responsible for any errors or omissions, or for any actions taken based on the information provided herein.

Interstate 105: The Century Freeway Chronicle

Dive in with Flashcard Learning!

Route Description

Geographic Span

Parallel Pathways

Termini and Connections

History & Development

Early Planning and Delays

Community Opposition and Legal Battles

Construction Challenges

Century Freeway Housing Program

Cultural Landmarks

Key Features & Integration

Judge Harry Pregerson Interchange

Metro C Line Integration

Filming Location

Exit List

Future Developments

Express Lanes Conversion

See Also

Related Topics

External Resources

Official & Informational Links

Teacher's Corner

Edit and Print this course in the Wiki2Web Teacher Studio

True or False?

Test Your Knowledge!

Gamer's Corner

Are you ready for the Wiki2Web Clarity Challenge?

Explore More Topics

Discover other topics to study!

References

References

Feedback & Support

To report an issue with this page, or to find out ways to support the mission, please click here.

Disclaimer

Important Notice

Interstate 105: The Century Freeway Chronicle

💡 Dive in with Flashcard Learning! 💡

Route Description

📍 Geographic Span

🛣️ Parallel Pathways

↔️ Termini and Connections

History & Development

📜 Early Planning and Delays

⚖️ Community Opposition and Legal Battles

🏗️ Construction Challenges

🏠 Century Freeway Housing Program

🎵 Cultural Landmarks

Key Features & Integration

🌉 Judge Harry Pregerson Interchange

🚆 Metro C Line Integration

🎬 Filming Location

Exit List

Future Developments

🚀 Express Lanes Conversion

See Also

🔗 Related Topics

External Resources

🌐 Official & Informational Links

Teacher's Corner 🧑‍🏫

Edit and Print this course in the Wiki2Web Teacher Studio

True or False? 🤔

❓ Test Your Knowledge! ❓

Gamer's Corner 🎮

Are you ready for the Wiki2Web Clarity Challenge?

Explore More Topics

📜 Discover other topics to study!

References

📜 References

Feedback & Support 👍

To report an issue with this page, or to find out ways to support the mission, please click here.

Disclaimer

📜 Important Notice

Dive in with Flashcard Learning!

Geographic Span

Parallel Pathways

Termini and Connections

Early Planning and Delays

Community Opposition and Legal Battles

Construction Challenges

Century Freeway Housing Program

Cultural Landmarks

Judge Harry Pregerson Interchange

Metro C Line Integration

Filming Location

Express Lanes Conversion

Related Topics

Official & Informational Links

Teacher's Corner

True or False?

Test Your Knowledge!

Gamer's Corner

Discover other topics to study!

References

Feedback & Support

Important Notice