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Interstate 405 (California) facts for kids

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Interstate 405 marker

Interstate 405
San Diego Freeway
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I-405 highlighted in red
Route information
Auxiliary route of I-5
Defined by S&HC § 615
Maintained by Caltrans
Length: 72.415 mi (116.541 km)
Existed: 1964 – present
Major junctions
South end: I-5 in Irvine
 
North end: I-5 near San Fernando
Location
Counties: Orange, Los Angeles
Highway system

Auxiliary route of the Interstate Highway System
Main • Auxiliary • Business

State highways in California(list • pre-1964)
History • Unconstructed • Deleted • Freeway • Scenic

US 395 US 466

Interstate 405 (I-405) is an Interstate Highway in the Orange and Los Angeles counties of California. It is a spur route of the Interstate 5. It goes from the I-5 near San Fernando, through the west side of Los Angeles and Long Beach before ending back at the Interstate 5 near Irvine. It is the busiest highway in the United States, mainly because it is the only highway in the west side of Los Angeles that goes from north to south. It also passes important places such as Los Angeles International Airport and the ports of Los Angeles and Long Beach.

Exits

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions). Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County Location Postmile
Exit
Destinations Notes
Orange
ORA 0.23–24.18
Irvine 0.23 I-5 south (San Diego Freeway south) – San Diego Southern terminus; former US 101 south; no access to I-5 north; I-5 exit 94A
1A Lake Forest Drive No northbound exit
1B Bake Parkway No northbound exit
0.95 1C Irvine Center Drive Signed as exit 1 northbound
I-5 south HOV access only; southbound exit and northbound entrance
1.80 2 SR 133 (Laguna Freeway) to toll road – Laguna Beach No northbound exit to SR 133 north; SR 133 exit 8
2.88 3 Shady Canyon Drive / Sand Canyon Avenue
3.95 4 Jeffrey Road / University Drive
5.62 5 Culver Drive
6.92 7 Jamboree Road
7.80 8 MacArthur Boulevard – John Wayne Airport
Costa Mesa 8.74 9A SR 55 (Costa Mesa Freeway) SR 55 north exit 6, south exits 6A-B
SR 55 north HOV access only
9B Anton Boulevard / Avenue of the Arts Northbound exit and entrance
9.51 9B Bristol Street
10.28 10 SR 73 south (Corona del Mar Freeway) to SR 55 south (Costa Mesa Freeway) – San Diego via toll road Southbound exit and northbound entrance
11 South Coast Drive Northbound exit only
10.75 11A Fairview Road Signed as exit 11 northbound
11.45 11B Harbor Boulevard – Costa Mesa Signed as exit 11 northbound
Fountain Valley 12.47 12 Euclid Street / Newhope Street / Ellis Avenue
13.78 14 Brookhurst Street – Fountain Valley
14.82 15A Warner Avenue east Southbound exit and northbound entrance
Huntington Beach 15.21 15B Magnolia Street / Warner Avenue west Signed as exit 15 northbound
16.54 16 SR 39 (Beach Boulevard) – Westminster, Huntington Beach
Westminster 17.75 18 Bolsa Avenue / Goldenwest Street Goldenwest Street is signed as Golden West St.
19.16 19A-B Westminster Boulevard / Springdale Street
20.56 20 Bolsa Chica Road / Valley View Street Southbound exit and entrance only
20.75 21 SR 22 east (Garden Grove Freeway) / Valley View Street – Garden Grove Southern end of SR 22 concurrency, Valley View St. not signed southbound
SR 22 east HOV access only; southbound exit and northbound entrance
Seal Beach 22.64 22 Seal Beach Boulevard / Los Alamitos Boulevard Former SR 35
23.28 23 SR 22 west – Long Beach Northern end of SR 22 concurrency; northbound exit and southbound entrance; I-605 exit 1A
I-605 north HOV access only; northbound exit and southbound entrance
OrangeLos Angeles
county line
Seal BeachLong Beach line 23.28 23 SR 22 west (7th Street) – Long Beach Southbound exit and northbound entrance; SR 22 exit 2, I-605 south exit 1A
24.04 24A I-605 north (San Gabriel River Freeway) Signed as exit 24 northbound; I-605 north exit 1A, south exits 1B-C; SR 22 exit 2
0.00–
0.03
San Gabriel River
Los Angeles
LA 0.00–48.64
Long Beach 0.45 24B Studebaker Road Southbound exit and northbound entrance
1.11 25 Palo Verde Avenue
1.64 26A Woodruff Avenue No southbound exit
2.18 26B Bellflower Boulevard Signed as exit 26 southbound
3.32 27 SR 19 (Lakewood Boulevard) – Long Beach Airport
4.88 29 Spring Street / Cherry Avenue – Signal Hill Signed as exits 29A (south) and 29B (north)
Signal Hill 5.39 29C Orange Avenue
Long Beach 6.08 30A Atlantic Avenue
6.34 30B Long Beach Boulevard Former SR 15
6.70 32A Pacific Avenue Southbound exit and northbound entrance
7.60 32 I-710 (Long Beach Freeway) – Long Beach, Pasadena Signed as exits 32A (north) and 32B (south) northbound, and 32B (south) and 32C (north) southbound; I-710 exit 4
8.06 32C Hughes Way / Santa Fe Avenue Signed as exit 32D southbound
Carson 8.78 33A Alameda Street (SR 47 south)
9.56 33B Wilmington Avenue
10.54 34 Carson Street
11.22 35 Avalon Boulevard – Carson Northbound exit to Avalon Boulevard south is via exit 34.
12.60 36 Main Street Northbound exit and southbound entrance
12.97 37A I-110 (Harbor Freeway) – San Pedro, Los Angeles Signed as exit 37 northbound; former US 6; I-110 exit 9
Los Angeles 13.28 37B Vermont Avenue Southbound exit and northbound entrance
13.83 38A Normandie Avenue – Gardena
14.40 38B Western Avenue
Torrance 15.45 39 Crenshaw Boulevard – Torrance
16.57 40 To SR 91 / Artesia Boulevard Signed as exit 40A southbound; former SR 91
16.88 40B Redondo Beach Boulevard – Redondo Beach Southbound exit and northbound entrance
Lawndale 17.59 42A SR 107 (Hawthorne Boulevard) – Lawndale
Redondo Beach 18.23 42B Inglewood Avenue
Hawthorne 19.21 43 Rosecrans Avenue – Manhattan Beach Signed as exits 43A (east) and 43B (west) southbound
20.22 44 El Segundo Boulevard – El Segundo
Los Angeles R21.18 45A I-105 (Century Freeway) – El Segundo, Norwalk Signed as exit 45 southbound; serves Los Angeles International Airport; I-105 east exit 2, west exit 2B
R21.22 45B Imperial Highway Southbound exit is part of exit 46.
Inglewood 22.22 46 Century Boulevard – LAX Airport
23.36 47 Manchester Boulevard / La Cienega Boulevard / Florence Avenue Manchester Boulevard was former SR 42.
Los Angeles 24.27 48 La Tijera Boulevard
24.56 49A Howard Hughes Parkway / Sepulveda Boulevard Signed as exit 49 southbound
Culver City 25.46 49B Sepulveda Boulevard / Slauson Avenue (SR 90 east) Northbound exit only; SR 90 exit 2
25.95 50A Jefferson Boulevard Signed as exit 50B northbound
25.95 50B SR 90 (Marina Freeway) / Slauson Avenue – Marina del Rey Signed as exit 50A northbound; no access from I-405 north to SR 90 east; SR 90 exit 2
27.20 51 Culver Boulevard / Washington Boulevard – Culver City
27.96 52 Venice Boulevard (SR 187) / Washington Boulevard
Los Angeles 29.16 53A National Boulevard Northbound exit and southbound entrance
29.54 53B I-10 (Santa Monica Freeway) – Santa Monica, Los Angeles Signed as exit 53 southbound; I-10 exits 3A-B
30.18 54 Olympic Boulevard / Pico Boulevard Southbound exit and northbound entrance; former SR 26
30.86 55A SR 2 (Santa Monica Boulevard) Former US 66
31.54 55B Wilshire Boulevard Signed as exits 55B (east) and 55C (west) southbound
32.50 56 Montana Avenue Northbound exit only; demolished
33.00 57A Sunset Boulevard Signed as exit 57 southbound
33.29 57B Moraga Drive Northbound exit and entrance
34.76 59 Getty Center Drive
36.03 61 Mulholland Drive / Skirball Center Drive
Sherman Oaks, Los Angeles 39.00 63A Ventura Boulevard / Sepulveda Boulevard / Valley Vista Boulevard
39.43 63B US 101 (Ventura Freeway) – Ventura, Los Angeles US 101 exit 19A
40.29 64 Burbank Boulevard
Van Nuys, Los Angeles 41.36 65 Victory Boulevard – Van Nuys
42.36 66 Sherman Way – Van Nuys Airport Signed as exits 66A (east) and 66B (west) northbound
North Hills, Los Angeles 43.76 68 Roscoe Boulevard – Panorama City
44.74 69 Nordhoff Street
Mission Hills, Los Angeles 46.24 70 Devonshire Street – Granada Hills
46.85 71A SR 118 (Ronald Reagan Freeway) – Simi Valley Signed as exit 71 southbound; no southbound exit to SR 118 east or northbound entrance from SR 118 west; SR 118 east exit 42A, west exit 42B
47.24 71B San Fernando Mission Boulevard Northbound exit and southbound entrance
47.75 72 Rinaldi Street – Mission Hills
48.64 I-5 north (Golden State Freeway) – Sacramento Northern terminus; no access to I-5 south; I-5 exit 158
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

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