Interstate 605
Encyclopedia
Interstate 605 is a major north–south Interstate Highway
Interstate Highway System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, , is a network of limited-access roads including freeways, highways, and expressways forming part of the National Highway System of the United States of America...

 in the Greater Los Angeles Area
Greater Los Angeles Area
The Greater Los Angeles Area, or the Southland, is a term used for the Combined Statistical Area sprawled over five counties in the southern part of California, namely Los Angeles County, Orange County, San Bernardino County, Riverside County and Ventura County...

 of Southern California
Southern California
Southern California is a megaregion, or megapolitan area, in the southern area of the U.S. state of California. Large urban areas include Greater Los Angeles and Greater San Diego. The urban area stretches along the coast from Ventura through the Southland and Inland Empire to San Diego...

. It is about 27 miles (43 km) in length, and runs from Seal Beach
Seal Beach, California
-Neighborhoods:Seal Beach encompasses the Leisure World retirement gated community with roughly 9,000 residents. This was the first major planned retirement community of its type in the U.S...

 to Irwindale
Irwindale, California
Irwindale is a city in the San Gabriel Valley, in Los Angeles County, California, United States. The population was 1,422 at the 2010 census, down from 1,446 at the 2000 census....

, closely paralleling the San Gabriel River
San Gabriel River (California)
The San Gabriel River flows through southern Los Angeles County, California in the United States. Its main stem is about long, while its farthest tributaries extend almost altogether...

 for most of its alignment. Thus, it is officially known as the San Gabriel River Freeway, one of the few Southern California freeways
Southern California freeways
The Southern California freeways are a network of interconnected freeways in the Megaregion of Southern California with a population of 22 million. A comprehensive freeway plan was produced in 1947 and with construction beginning in the 1950s...

 not named after a city along its route.

This route is part of the California Freeway and Expressway System
California Freeway and Expressway System
The California Freeway and Expressway System is a system of existing or planned freeways and expressways in the U.S. state of California. It is defined by the Streets and Highways Code.-List of roads in the system:*State Route 1 *State Route 2...

.

Route description

The southern terminus of I-605 is at the San Diego
Interstate 405 (California)
Interstate 405 is a major north–south Interstate Highway in Southern California. It is a bypass of Interstate 5, running along the western areas of the Greater Los Angeles Area from Irvine in the south to near San Fernando in the north...

 (I-405
Interstate 405 (California)
Interstate 405 is a major north–south Interstate Highway in Southern California. It is a bypass of Interstate 5, running along the western areas of the Greater Los Angeles Area from Irvine in the south to near San Fernando in the north...

) and Garden Grove (State Route 22
California State Route 22
State Route 22 in the U.S. state of California is an east–west highway in southern Los Angeles County and northern Orange County. It runs between Long Beach and Orange by way of Garden Grove. The westernmost part of it is a surface street, Long Beach's 7th Street. From Long Beach to its...

) Freeways in Seal Beach
Seal Beach, California
-Neighborhoods:Seal Beach encompasses the Leisure World retirement gated community with roughly 9,000 residents. This was the first major planned retirement community of its type in the U.S...

. From there, it runs roughly north through the Gateway Cities
Gateway Cities
The Gateway Cities of Southern California are those located in southeastern Los Angeles County. There is some cross-over between these cities and those composing South Los Angeles, East Los Angeles, the South Bay, and the San Gabriel Valley...

 of the Los Angeles Basin
Los Angeles Basin
The Los Angeles Basin is the coastal sediment-filled plain located between the Peninsular and Transverse ranges in southern California in the United States containing the central part of the city of Los Angeles as well as its southern and southeastern suburbs...

. It then shifts north-northeast, crossing the Whittier Narrows and across the San Gabriel Valley
San Gabriel Valley
The San Gabriel Valley is one of the principal valleys of Southern California, United States. It lies to the east of Los Angeles, to the north of the Puente Hills, to the south of the San Gabriel Mountains, and west of the Inland Empire. It derives its name from the San Gabriel River that flows...

. I-605 then ends at its junction with the Foothill Freeway, (I-210
Interstate 210 (California)
Interstate 210 and State Route 210 together form a contiguous highway, called the Foothill Freeway, in the Greater Los Angeles area of the U.S. state of California. The western portion of the route is an auxiliary Interstate Highway, while the eastern portion is a state highway...

) in Duarte
Duarte, California
Duarte is a city in Los Angeles County, California, United States. As of the 2010 census, the city population was 21,321, down from 21,486 at the 2000 census....

, a small city located at the foothills of the San Gabriel Mountains
San Gabriel Mountains
The San Gabriel Mountains Range is located in northern Los Angeles County and western San Bernardino County, California, United States. The mountain range lies between the Los Angeles Basin and the Mojave Desert, with Interstate 5 to the west and Interstate 15 to the east...

.

I-605 follows most of the length of the San Gabriel River
San Gabriel River (California)
The San Gabriel River flows through southern Los Angeles County, California in the United States. Its main stem is about long, while its farthest tributaries extend almost altogether...

 from the San Diego Freeway in Seal Beach to the Santa Fe Dam
Santa Fe Dam Recreation Area
The Santa Fe Dam Recreation Area is a county park located in Irwindale, California, USA in the San Gabriel Valley and nestled among the gravel quarries in the area. It is maintained and operated by the Los Angeles County Department of Parks and Recreation...

. Typically dry riverbed and flood basins are visible from many portions of the route, especially near the northern terminus. Also, the freeway features an HOV lane for carpools of two or more people throughout most of the route. The left shoulder is close to non-existent. The road also suffers from traffic jams regularly, especially near I-5 (the Santa Ana Freeway
Santa Ana Freeway
The Santa Ana Freeway is one of the principal freeways in Southern California, connecting Los Angeles and its southeastern suburbs including the freeway's namesake, the city of Santa Ana. The freeway begins at the Four Level Interchange in downtown Los Angeles, signed as U.S. Route 101...

).

Signs along I-605's entrances and freeway junctions do not include destinations (control cities) such as "Seal Beach
Seal Beach, California
-Neighborhoods:Seal Beach encompasses the Leisure World retirement gated community with roughly 9,000 residents. This was the first major planned retirement community of its type in the U.S...

" or "Irwindale
Irwindale, California
Irwindale is a city in the San Gabriel Valley, in Los Angeles County, California, United States. The population was 1,422 at the 2010 census, down from 1,446 at the 2000 census....

", but simply read "NORTH" or "SOUTH". In place of control cities, a simple "THRU TRAFFIC" designation is used on signs along I-605 itself.

Route 605 from Route 405 to Route 10 is known as the San Gabriel River Freeway, as named by Senate Bill 99, Chapter 1101 in 1967.

Other names
  • The I-605/I-105 interchange is known as the Joe A. Gonsalves Memorial Interchange, as named by Assembly Bill 96, Chapter 129 in 2001. Gonsalves became the first person of Portuguese
    Portugal
    Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

     ancestry to become a member of the California State Legislature
    California State Legislature
    The California State Legislature is the state legislature of the U.S. state of California. It is a bicameral body consisting of the lower house, the California State Assembly, with 80 members, and the upper house, the California State Senate, with 40 members...

     in 1962

Transportation

Metro Express
Metro Express
Metro Express is a form of express bus service in Los Angeles County, California, operated by the Los Angeles County Metropolitan Transportation Authority. Buses are usually express for a portion of the route, then run either local or limited stop in other areas...

 line 577 runs through Interstate 605 between Interstate 10 and Interstate 405
Interstate 405 (California)
Interstate 405 is a major north–south Interstate Highway in Southern California. It is a bypass of Interstate 5, running along the western areas of the Greater Los Angeles Area from Irvine in the south to near San Fernando in the north...

. The Green Line serves the Norwalk Station
Norwalk (LACMTA station)
Norwalk is a Los Angeles County Metro Rail station on the Green Line. Located in Norwalk, California, it is the eastern terminus of the Green Line...

 at the interchange of the eastern terminus of 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...

.

History

Interstate 605 began construction in 1963 and the first section was opened in 1964 from Interstate 405
Interstate 405 (California)
Interstate 405 is a major north–south Interstate Highway in Southern California. It is a bypass of Interstate 5, running along the western areas of the Greater Los Angeles Area from Irvine in the south to near San Fernando in the north...

 to Pomona Freeway CA 60. The newest section (extension to Interstate 210
Interstate 210 (California)
Interstate 210 and State Route 210 together form a contiguous highway, called the Foothill Freeway, in the Greater Los Angeles area of the U.S. state of California. The western portion of the route is an auxiliary Interstate Highway, while the eastern portion is a state highway...

) was opened in 1971 was originally signed as SR 243. Originally it was planned as I-13 running from Interstate 5 to I-15. There are plans to extend it to SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 further south in Orange County, but strong community opposition means that it is unlikely that the alignment will ever be built.

Exit list

Note: Except where prefixed with a letter, postmiles were measured in 1964, based on the alignment as it existed at that time, and do not necessarily reflect current mileage. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

{| class=wikitable
!County
!Location
!Postmile

!Exit
Exit number
An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit, as well as a sign in the gore....



!Destinations
!Notes
|-
|rowspan=5|Orange
Orange County, California
Orange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County...


ORA 3.09-R1.64
|rowspan=3|Seal Beach
Seal Beach, California
-Neighborhoods:Seal Beach encompasses the Leisure World retirement gated community with roughly 9,000 residents. This was the first major planned retirement community of its type in the U.S...


|bgcolor=#ffdddd|3.09
|bgcolor=#ffdddd|1A
|bgcolor=#ffdddd|
|bgcolor=#ffdddd|Southbound exit and northbound entrance
|-bgcolor=#ffdddd
|3.50
|1B
|
|Southbound exit and northbound entrance; former SR 7 south
|-
|R0.00
|1C
|
|Signed as exit 1A northbound; former SR 7 north
|-
|rowspan=2|Los Alamitos
Los Alamitos, California
Los Alamitos is a small city in Orange County, California. The city was incorporated in March 1960. The population was 11,449 at the 2010 census, down from 11,536 at the 2000 census...


|R1.41
|1D
|Katella Avenue – Los Alamitos
Los Alamitos, California
Los Alamitos is a small city in Orange County, California. The city was incorporated in March 1960. The population was 11,449 at the 2010 census, down from 11,536 at the 2000 census...


|Signed as exit 1B northbound
|-
|R1.41
|2A
|Willow Street
|Signed as exit 1B northbound
|-
|rowspan=28|Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...


LA R0.00-25.76
|rowspan=2|Long Beach
Long Beach, California
Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...


|bgcolor=#ffdddd|R0.29
|bgcolor=#ffdddd|2B
|bgcolor=#ffdddd|Spring Street, Cerritos Avenue
|bgcolor=#ffdddd|Southbound exit and northbound entrance
|-
|R1.74
|3
|Carson Street, Lincoln Avenue – Hawaiian Gardens
Hawaiian Gardens, California
Hawaiian Gardens is a city in Los Angeles County, California, United States. It is the smallest city in the county and was incorporated on April 9, 1964. The population was 14,254 at the 2010 census, down from 14,779 at the 2000 census.The town's unusual name originated in a 1920s refreshment...


|
|-
|rowspan="3"|Cerritos
Cerritos, California
Cerritos is a city in Los Angeles County, California, United States, and is one of several cities that constitute the Gateway Cities of southeast Los Angeles County. It was incorporated on April 24, 1956...


|R2.87
|5A
|Del Amo Boulevard – Lakewood
Lakewood, California
Lakewood is a city in Los Angeles County, California, United States. The population was 80,048 at the 2010 census. It is bordered by Long Beach on the west and south, Bellflower on the north, Cerritos on the northeast, Cypress on the east, and Hawaiian Gardens on the southeast. Major thoroughfares...


|
|-
|R3.75
|5B
|South Street
|
|-
|R5.05
|7A
|
|
|-
|rowspan="5"|Norwalk
Norwalk, California
Norwalk is a suburban city in Los Angeles County, California, United States. The population was 105,549 at the 2010 census, up from 103,298 at the 2000 census, making it the 58th most populous city in California and the 255th nationally....


|R5.81
|7B
|Alondra Boulevard
|
|-
|R6.81
|9A
|Rosecrans Avenue
|
|-
|R7.65
|9B
|
|
|-
|R7.85
|9C
|Imperial Highway
Imperial Highway
Imperial Highway is a road in Orange and Los Angeles counties in California. It begins at the Anaheim-Orange boundary and runs through several cities until it stops at Dockweiler State Beach in Los Angeles near the Los Angeles International Airport. For much of the way, Imperial Highway is signed...


|Signed as exit 9B southbound
|-
|R8.38
|10
|Firestone Boulevard
|Former SR 42
|-
|rowspan=5|Santa Fe Springs
Santa Fe Springs, California
Santa Fe Springs is a city in Los Angeles County, California, United States. It is one of the Gateway Cities of southeast Los Angeles County. The population was 16,223 at the 2010 census, down from 17,438 at the 2000 census....


|R9.35
|11
|Florence Avenue – Downey
Downey, California
Downey is a city located in southeast Los Angeles County, California, United States, southeast of downtown Los Angeles. The city is best known as the birthplace of the Apollo space program, and is the city where folk singer Karen Carpenter lived and died...


|
|-
|R9.61
|11
|
|
|-
|R10.25
|12
|Telegraph Road – Santa Fe Springs
Santa Fe Springs, California
Santa Fe Springs is a city in Los Angeles County, California, United States. It is one of the Gateway Cities of southeast Los Angeles County. The population was 16,223 at the 2010 census, down from 17,438 at the 2000 census....


|
|-
|R11.54
|13
|Slauson Avenue
Slauson Avenue
Slauson Avenue is a major east-west thoroughfare for southern Los Angeles County, California, named for the land developer and Los Angeles Board of Education member J. S. Slauson. It passes through Culver City, Ladera Heights, View Park-Windsor Hills, Baldwin Hills, Inglewood, South Los Angeles,...


|
|-
|R12.05
|14
|Washington Boulevard
Washington Boulevard (Los Angeles)
Washington Boulevard is the longest continuous east-west arterial road in Los Angeles, California. It starts by the Pacific Ocean just west of Pacific Avenue in Marina del Rey, and ends far to the east in the city of Whittier, on Whittier Boulevard. It is south of Venice Boulevard for most of its...

 – Pico Rivera
Pico Rivera, California
Pico Rivera is a city located in southeastern Los Angeles County, California, United States. The city is situated approximately 11 miles southeast of downtown Los Angeles, on the eastern edge of the Los Angeles basin, and on the southern edge of the area known as the San Gabriel Valley...


|Signed as exits 14A (west) and 14B (east) southbound
|-
|Whittier
Whittier, California
Whittier is a city in Los Angeles County, California about southeast of Los Angeles. The city had a population of 85,331 at the 2010 census, up from 83,680 as of the 2000 census, and encompasses 14.7 square miles . Like nearby Montebello, the city constitutes part of the Gateway Cities...


|R13.57
|15
|
|
|-
|rowspan="2"|Pico Rivera
Pico Rivera, California
Pico Rivera is a city located in southeastern Los Angeles County, California, United States. The city is situated approximately 11 miles southeast of downtown Los Angeles, on the eastern edge of the Los Angeles basin, and on the southern edge of the area known as the San Gabriel Valley...


|R14.41
|16
|Beverly Boulevard
Beverly Boulevard
Beverly Boulevard is one of the main east-west thoroughfares in Los Angeles, California. It begins off Santa Monica Boulevard in Beverly Hills and ends on the Lucas Avenue overpass near Downtown Los Angeles to become 1st Street...


|Southbound exit to Beverly Boulevard west is via exit 17
|-
|R15.57
|17
|Rose Hills Road
|
|-
|rowspan="3"|Industry
Industry, California
Industry is an industrial suburb of Los Angeles in the San Gabriel Valley region of Los Angeles County. Home to over 2,500 businesses and 80,000 jobs, but only 219 residents at the 2010 census - down from 777 residents as of the 2000 United States census - the city is almost entirely industrial...


|R16.65
|18
|Peck Road
|
|-
|R17.41
|19
|
|
|-
|R19.39
|21
|Valley Boulevard
Valley Boulevard
Valley Boulevard is a street in Southern California, running east from Los Angeles to Pomona, where it becomes Holt Boulevard, and a continuation from Fontana to Colton. It generally parallels Interstate 10 and State Route 60, and is the original alignment of U.S. Route 60...

 – Industry
Industry, California
Industry is an industrial suburb of Los Angeles in the San Gabriel Valley region of Los Angeles County. Home to over 2,500 businesses and 80,000 jobs, but only 219 residents at the 2010 census - down from 777 residents as of the 2000 United States census - the city is almost entirely industrial...


|Former SR 212
|-
|rowspan="2"|Baldwin Park
Baldwin Park, California
Baldwin Park is a city located in the central San Gabriel Valley region of Los Angeles County, California, United States. As of the 2010 census, the population was 75,390, down from 75,837 at the 2000 census.- History :...


|20.19
|22
|
|
|-
|21.07
|23
|Ramona Boulevard – Baldwin Park
Baldwin Park, California
Baldwin Park is a city located in the central San Gabriel Valley region of Los Angeles County, California, United States. As of the 2010 census, the population was 75,390, down from 75,837 at the 2000 census.- History :...

, El Monte
El Monte, California
El Monte is a residential, industrial, and commercial city in Los Angeles County, California, United States. The city's slogan is "Welcome to Friendly El Monte," and historically is known as "The End of the Santa Fe Trail." As of the 2010 census, the city had a total population of 113,475,...


|
|-
|rowspan=4|Irwindale
Irwindale, California
Irwindale is a city in the San Gabriel Valley, in Los Angeles County, California, United States. The population was 1,422 at the 2010 census, down from 1,446 at the 2000 census....


|22.15
|24
|Lower Azusa Road, Los Angeles Street
|
|-bgcolor=#ffdddd
|23.52
|25
|Live Oak Avenue – Irwindale
Irwindale, California
Irwindale is a city in the San Gabriel Valley, in Los Angeles County, California, United States. The population was 1,422 at the 2010 census, down from 1,446 at the 2000 census....


|Northbound exit and southbound entrance
|-bgcolor=#ffdddd
|23.96
|26
|Arrow Highway
|Southbound exit and northbound entrance
|-
|25.76
|27
|
|Signed as exits 27A (east) and 27B (west); no exit number southbound
|-
|Duarte
Duarte, California
Duarte is a city in Los Angeles County, California, United States. As of the 2010 census, the city population was 21,321, down from 21,486 at the 2000 census....


|25.76
|27C
|Huntington Drive
Huntington Drive
Huntington Drive is a major east–west street in Southern California. It runs from the merge of Soto Street and Mission Road near the Lincoln Park neighborhood of Los Angeles east through the El Sereno section of Los Angeles, South Pasadena, San Marino, Alhambra, San Gabriel, Arcadia,...

 – Duarte
Duarte, California
Duarte is a city in Los Angeles County, California, United States. As of the 2010 census, the city population was 21,321, down from 21,486 at the 2000 census....


|At-grade intersection
At-grade intersection
An at-grade intersection is a junction at which two or more transport axes cross at the same level .-Traffic management:With areas of high or fast traffic, an at-grade intersection normally requires a traffic control device such as a stop sign, traffic light or railway signal to manage conflicting...

; former US 66
U.S. Route 66 in California
In the U.S. state of California, U.S. Route 66 is a former U.S. highway. All the portions were deleted by 1964 during the 1964 renumbering.-History:U.S...

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