Interstate 110 in California


Get started San Pedro
End Downtown Los Angeles
Length 21 mi
Length 34 km
1A Terminal Island Fwy1B Channel Street

3A C Street

3B Anaheim Street

4 Pacific Coast Highway

5 Sepulveda Boulevard

7A 223rd Street

7B Carson Street

8 Torrance Boulevard

9 San Diego Fwy

10 Gardena Fwy

11 Redondo Beach Boulevard

12 Rosecrans Avenue

13 El Segundo Boulevard

14A Glen Anderson Fwy

14B Imperial Highway

15 Century Boulevard

16 Manchester Avenue

17 Florence Avenue

18A Gage Avenue

18B Slauson Avenue

19A 51st Street

19B Vernon Avenue

20A Martin Luther King Jr. Boulevard

20B 37th Street

20C Adams Boulevard

21 Santa Monica Fwy

Interstate 110 is an Interstate Highway in the US state of California. The highway is also called the Harbor Freeway, or 110 Freeway (pronounced: one-ten ), and forms a north-south route through Los Angeles. The highway runs from the ports of Los Angeles at San Pedro to Downtown Los Angeles, where State Route 110 continues north. I-110 is 21 miles long.

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Travel directions

Harbor Freeway

I-110 in Los Angeles, at the Judge Harry Pregerson Interchange with I-105.

The highway begins in the San Pedro neighborhood, in the Los Angeles Harbor area, 35 miles south of downtown. The start is on State Route 47, the Vincent Thomas Bridge, and on the main streets of Gaffey Street and Summerland Avenue. The highway runs north, parallel to oil refineries and the ports. You then enter the Wilmington borough, where you cross the Pacific Coast Highway, State Route 1. The highway passes through an area called the “Harbor Gateway”, a 2 mile wide strip that belongs within the city limits of Los Angeles. thus providing a connection between downtown and the ports of Los Angeles. One passes by Carson, an industrial suburb with 92,000 inhabitants. The I-110 has 2×4 lanes here. At the interchange with Interstate 405, the “San Diego Freeway”, is a large business park spanning the city of Los Angeles and the city of Torrance. The urban area has grown together completely, and it is impossible to see where the boundaries are in the streetscape.

Parallel lanes are located after this junction, as the SR-91 or Gardena Freeway exits to the east shortly after. There are 14 lanes side by side here. After this you pass Gardena, a suburb with 58,000 inhabitants. The 110 has 2×6 lanes here. The highway runs right through all the residential areas, because there are no open spaces in this area, everything is built up, with houses directly along the highway.

At Westmont one crosses Interstate 105, an east-west link between the International Airport and the “Gateway” suburbs like South Gate, Downey and Norwalk. The 105 is one of the most recent highways in the metropolitan area. The node is very impressive with seven tiers, towering over the surrounding area. The tallest connecting arches offer spectacular views of the Los Angeles skyline. After this, the highway still has 2×6 lanes, making it one of the wider highways in the metropolitan area, as 2×5 is more of a standard for highways in Los Angeles. The coming area consists of a very vast sea of ​​houses known as South (Central) Los Angeles. The road network is built in a grid model, with an intersecting street every 90 meters. The 110 only crosses major roads such as Manchester Avenue, Florence Avenue and Slauson Avenue.

The highway has 2×6 lanes towards the center, with bus lanes in the middle, and even bus stations in the central reservation, so that the corridor including emergency lanes is 85 meters wide. Closer to the center, the HOVlanes are elevated above the median strip. At Figueroa Street, the HOV lanes branch off into the secondary road network, continuing north for 2×5 lanes.

On the southwest side of downtown, one crosses Interstate 10, the “Santa Monica Freeway”. This junction forms the transition from Interstate 110 to State Route 110. Via “the Ten”, as locals call the highway, you can get to Santa Monica in the west, and towards the Inland Empire, the eastern suburbs. Now one comes downtown, with tall towers towering over the highway, and there are many exits a short distance away, most major streets have an exit here, such as Wilshire Boulevard, Beverly Boulevard and Temple Street. This part is sunken, and partly also has parallel tracks. Via a 4-layer interchange one crosses the US 101, the Hollywood Freeway, on the north side of the center. This is the area where the “Harbor Freeway” merges into the “Arroyo Seco Parkway”.

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In 1940, the Arroyo Seco Parkway was opened, a highway that met the requirements at the time, creating a connection between Los Angeles and Pasadena. Construction of the highway to San Pedro went much slower, despite the fact that this was the top priority in the early years. The first section of the Harbor Freeway was opened in 1952, between US 101 and 3rd Street.

Beginning in 1952, the Harbor Freeway was extended south through Los Angeles fairly quickly to the southernmost neighborhood of San Pedro. With the exception of the southernmost section between Channel Street and the Pacific Coast Highway, the route has been opened chronologically southward. In 10 years, the highway was more or less complete. In 1970 the last kilometer was opened with the connection to the Vincent Thomas Bridge.

In December 1978 the Harbor Freeway was assigned within the Interstate Highway system, so only the part between I-10 and US 101 at Downtown Los Angeles was still called State Route 110 and Harbor Freeway.

Between early 2010 and 2013, an additional northbound lane was constructed between I-10 and 6th Street in Downtown Los Angeles. This will open 6 lanes to the north. Construction of the 6th lane cost $25 million. In May 2016, an additional lane was completed at the southern end of I-110 in San Pedro, from SR-47 to Channel Street. This will take two lanes from SR-47 to I-110 instead of one. The project cost $46 million.

Opening history

I-110 at Downtown Los Angeles.

From Unpleasant Length Opening
3rd St Hollywood Fwy 1 km 30-07-1952
Olympic Blvd 3rd St 2 km 23-03-1954
Washington Blvd Olympic Blvd 1 km 14-05-1954
42nd Street Washington Blvd 3 km 27-03-1956
Channel St Pacific Coast Highway 5 km 19-06-1956
88th Place 42nd Street 6 km 24-04-1957
Century Blvd 88th Place 1 km 31-07-1958
124th St Century Blvd 3 km 24-09-1958
Alondra Blvd 124th St 4 km 02-05-1960
190th St Alondra Blvd 3 km 07-15-1960
Torrance Blvd 190th St 2 km 28-08-1962
Pacific Coast Highway Torrance Blvd 5 km 26-09-1962
Gaffey Sto Channel St 1 km 09-07-1970


Interstate 110 has the busiest HOV facility in the United States; the Harbor Transitway, which is also used by buses. The HOV lanes run from SR-91 (Artesia Freeway) to I-10 at Downtown Los Angeles. Most of the HOV lanes consist of 2 lanes in each direction, and there are also bus stations in the central reservation. The Harbor Transitway is also the only HOV facility in Los Angeles County that is partly detached from other lanes, and even partly elevated on an overpass above regular Los Angeles lanes. Every day, 56,000 vehicles use the Harbor Transitway.


The entire HOV facility on I-110 opened on June 26, 1996, from SR-91 to I-10. The direct HOV flyover at the interchange with I-105 opened to traffic in July 1997. There were once plans to extend the HOV facility further into Downtown Los Angeles through an overpass on top of the existing highway, but this has not been implemented.

HOT lanes

As of November 10, 2012, the Harbor Transitway has been converted to a HOT facility. Since the 4 HOV lanes were used by 56,000 vehicles, there was residual capacity for paying solo drivers. The project cost $290 million, including the conversion of the El Monte Busway on I-10 to a HOT facility.

Traffic intensities

Exit Location 2008 2012 2016
Exit 1 Los Angeles ( SR-47 ) 50,000 51,000 52,000
Exit 9 Carson ( I-405 ) 221,000 213,000 271,000
Exit 10 Carson ( SR-91 ) 266,000 260,000 242,000
Exit 14 Los Angeles ( I-105 ) 259,000 249,000 292,000
Exit 16 Los Angeles 328,000 313,000 313,000
Exit 21 Los Angeles ( I-10 ) 280,000 263,000 279,000
Exit 24 Los Angeles ( U.S. 101 ) 275,000 268,000 278,000
Exit 26 Los Angeles ( I-5 ) 182,000 184,000 185,000
Exit 31 pasadena 58,000 57,000 44,000


State Route 110 between I-10 and Stadium Way is the largest traffic jam in the United States in terms of hours lost per mile, at 1,440,000 hours per mile in 2011. This causes an unnecessary consumption of 8.2 million liters of fuel per mile. year. It is the 27th most expensive traffic jam in the country with a loss of $95 million a year. At the same time, the stretch of road connecting it from the south, from 111th Place to I-10, is the second largest cause of lost time in the country, at 1,126,000 hours per mile. This traffic jam costs more money, at $158 million a year, making it the 14th most expensive traffic jam in the United States.

Interstate 110 in California

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