Judge Harry Pregerson Interchange
Encyclopedia
The Judge Harry Pregerson Interchange is a stack
Stack interchange
A stack interchange is a free-flowing grade separated junction between two roads.In countries where one drives on the right, left turns are handled by semi-directional flyover/under ramps...

 interchange
Interchange (road)
In the field of road transport, an interchange is a road junction that typically uses grade separation, and one or more ramps, to permit traffic on at least one highway to pass through the junction without directly crossing any other traffic stream. It differs from a standard intersection, at which...

 near the Athens and Watts
Watts, Los Angeles, California
Watts is a mostly residential neighborhood in South Los Angeles, California.-History:The area now known as Watts is located on the Rancho La Tajauta Mexican land grant...

 communities of Los Angeles
Los Ángeles
Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

, California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. It is the interchange of the following routes:

Though the interchange permits traffic entering the interchange in all directions to exit in all directions (cf.
Cf.
cf., an abbreviation for the Latin word confer , literally meaning "bring together", is used to refer to other material or ideas which may provide similar or different information or arguments. It is mainly used in scholarly contexts, such as in academic or legal texts...

Hollywood Split
Hollywood Split
The Hollywood Split is a freeway interchange in the San Fernando Valley area of Los Angeles, California...

, East Los Angeles Interchange
East Los Angeles Interchange
The East Los Angeles Interchange complex is the busiest freeway interchange in the world, with its southern portion handling over 550,000 vehicles per day . The northern portion, called the San Bernardino Split, is often considered a separate interchange. The interchange was named the Eugene A....

), the interchange also consists of direct HOV connectors, Metro Green Line tracks, and the Harbor Transitway
Harbor Transitway
The Harbor Transitway is an 11-mile shared-use bus corridor and high-occupancy vehicle roadway that runs in the median of Interstate 110 in Southern California...

, all of which contribute to the towering, imposing structure for which the interchange is known.

Opened with Interstate 105
Interstate 105 (California)
Interstate 105 is an Interstate Highway in southern Los Angeles County, California that runs east–west from near the Los Angeles International Airport to Norwalk...

 in 1993, the interchange is named for Harry Pregerson
Harry Pregerson
Harry Pregerson serves as a judge on the United States Court of Appeals for the Ninth Circuit. He was appointed to the Ninth Circuit in 1979 by President Jimmy Carter...

, a longtime federal judge
United States federal judge
In the United States, the title of federal judge usually means a judge appointed by the President of the United States and confirmed by the United States Senate in accordance with Article II of the United States Constitution....

 who presided over the lawsuit concerning the I-105
Interstate 105 (California)
Interstate 105 is an Interstate Highway in southern Los Angeles County, California that runs east–west from near the Los Angeles International Airport to Norwalk...

 freeway's construction.

Layout

Traffic entering the interchange on the freeway trunks from all directions has freedom to exit the interchange in all possible directions of travel (complete interchange). However, traffic using direct high-occupancy vehicle lane
High-occupancy vehicle lane
In transportation engineering and transportation planning, a high-occupancy vehicle lane is a lane reserved for vehicles with a driver and one or more passengers...

 connectors is more restricted. Motorists entering eastbound or westbound on the I-105 HOV lanes may connect to the northbound I-110 HOV lanes. Motorists entering the interchange on the southbound I-110 HOV lanes may connect to either the eastbound or westbound I-105 HOV lanes, while motorists entering northbound on the I-110 HOV lanes do not have direct HOV connectors to I-105 and may only continue northbound. HOV drivers wishing to connect to a direction of travel for which there is no direct HOV connector must exit the HOV lane at a designated entry/exit point before the interchange and use the mainline connectors, as is typical for HOV lanes in Southern California.

Public transit

The interchange also houses the Harbor Freeway
Harbor Freeway (LACMTA station)
Harbor Freeway is a transport hub located within the Judge Harry Pregerson Interchange of Interstates I-105 and I-110 near Figueroa Street serving the Metro Green Line and the Silver Line and other bus services...

 Metro
Los Angeles County Metropolitan Transportation Authority
The Los Angeles County Metropolitan Transportation Authority is the California state-chartered regional transportation planning agency and public transportation operating agency for the County of Los Angeles formed in 1993 out of a merger of the Southern California Rapid Transit District and the...

 station, which jointly serves the Metro Green Line light rail
Light rail
Light rail or light rail transit is a form of urban rail public transportation that generally has a lower capacity and lower speed than heavy rail and metro systems, but higher capacity and higher speed than traditional street-running tram systems...

 and Harbor Transitway
Harbor Transitway
The Harbor Transitway is an 11-mile shared-use bus corridor and high-occupancy vehicle roadway that runs in the median of Interstate 110 in Southern California...

 busway
Busway
Busway may refer to several things:Transport technology* Bus rapid transit, bus systems including some elements of trams or metro systems* Guided busway, concrete tracks exclusively for modified busesTransport systems...

, which travel down the medians of I-105 and I-110, respectively.

History

As described in a 1989 Los Angeles Times
Los Angeles Times
The Los Angeles Times is a daily newspaper published in Los Angeles, California, since 1881. It was the second-largest metropolitan newspaper in circulation in the United States in 2008 and the fourth most widely distributed newspaper in the country....

article, the interchange, connecting the existing I-110 with the new I-105 (then called the Century Freeway), was designed to be "biggest, tallest, most costly traffic structure yet built by California Department of Transportation" and "the first time the state's traffic engineers have integrated three modes of transportation--light-rail trains, high-occupancy vehicles and individual cars--into one giant intersection".

Shortly before the interchange opened, filmmakers had access to use it for the 1994 motion picture Speed. In one of the movie's best-known scenes, the bus must jump across an unfinished construction gap in an uncompleted elevated freeway-to-freeway ramp while still under construction. The fifth level HOV flyover (I-110 SB to I-105 WB) that bus jumped had already been completed, so a gap was added in the editing process using computer-generated imagery
Computer-generated imagery
Computer-generated imagery is the application of the field of computer graphics or, more specifically, 3D computer graphics to special effects in art, video games, films, television programs, commercials, simulators and simulation generally, and printed media...

.

In 1996, the U.S. Federal Highway Administration
Federal Highway Administration
The Federal Highway Administration is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two "programs," the Federal-aid Highway Program and the Federal Lands Highway Program...

recognized the Interstate 105/Interstate 110 interchange with an Award of Merit in the Urban Highways category of its biennial Excellence in Highway Design awards. The award recognized the interchange's design which sought to improve traffic congestion, safety, and air quality.
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