Interstate 805 Auxiliary route of the Interstate Highway System
Defined by S&HC § 621, maintained by Caltrans
Length:	28. The Dwight D Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System (or simply the Interstate System) The California Department of Transportation ( Caltrans) is a Government department in the U 51 mi[1] (45. A mile is a unit of Length, usually used to measure Distance, in a number of different systems including Imperial units United States 88 km)
South end:	I-5 in San Ysidro
Major junctions:	I-8 in San Diego
North end:	I-5 near Del Mar
State highways in California (list - pre-1964) County routes in California (list) < I-780 I-880 > History - Unconstructed - Deleted - Freeway - Scenic

Interstate 805 (I-805 - also referred to as "The 805"), is a bypass interstate highway running through the San Diego metropolitan area. The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts San Ysidro is a community within the city of San Diego California. In the US state of California, Interstate 8 is designated for, from Sunset Cliffs Boulevard in San Diego to the California- Arizona Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts Del Mar is a city in San Diego County, California, United States. Each State highway in the US State of California is maintained by the California Department of Transportation (Caltrans and is assigned a This is a list of State highways in the US state of California that have existed since the 1964 renumbering. This is a list of State highways in the US state of California that existed before the 1964 renumbering. In the US state of California, County routes are controlled and maintained by the respective counties in which they reside Interstate 780 (I-780 is an Interstate Highway in the San Francisco Bay Area of the U Interstate 880 (I-880 is an Interstate highway in the San Francisco Bay Area connecting San Jose and Oakland, running parallel to the southeastern See also State highways in California The State highway system in the U See also State highways in California The following State highways in the U Below is a list and summary of some of the deleted State highways (i List of roads in the system State Route 1 (part State Route 2 (part State Route 3 (part State The State Scenic Highway System is a list of highways mainly State highways that have been designated by the California Department of Transportation (Caltrans as A bypass is a Road or Highway that avoids or "bypasses" a built-up area town or village to let through Traffic flow without interference from The Dwight D Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System (or simply the Interstate System) It is officially known as the Jacob Dekema Freeway after Jacob Dekema, a pioneering force from the California Department of Transportation (Caltrans) who helped shape the San Diego freeway system. The California Department of Transportation ( Caltrans) is a Government department in the U

This route is part of the California Freeway and Expressway System^[2]. List of roads in the system State Route 1 (part State Route 2 (part State Route 3 (part State

Route description

Miramar Rd Overpass

I-805 is an alternate bypass route of Interstate 5. A control city is a city or locality posted on a Traffic sign indicating forward destinations on a certain route The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts Chula Vista ( is a city in southern San Diego County, California, United States. National City is a city in San Diego County, California, United States. Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts A bypass is a Road or Highway that avoids or "bypasses" a built-up area town or village to let through Traffic flow without interference from Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts The southern terminus of the 805 is at I-5 just a few miles north of the United States–Mexico border at the San Diego district of San Ysidro. San Ysidro is a community within the city of San Diego California. I-805 then goes through the cities of Chula Vista and National City before reentering San Diego. Chula Vista ( is a city in southern San Diego County, California, United States. National City is a city in San Diego County, California, United States. The freeway then passes though the San Diego neighborhoods of North Park, Mission Valley, Clairemont, and University City before terminating at I-5 in Sorrento Valley. North Park is a neighborhood in San Diego, California, USA. It is situated to the northeast of Balboa Park, bounded on the north by El Cajon Mission Valley is a wide valley trending east-west in San Diego, California, through which the San Diego River flows to the Pacific Ocean. Clairemont is a Suburban neighborhood in northern San Diego. Clairemont is one of the most populous neighborhoods in San Diego Summary University City is a community in the city of San Diego California, United States. Sorrento Valley is a neighborhood of San Diego California, USA.

Eight to ten lanes throughout, Interstate 805 has evolved into a busy commuter route from the International Border into the exploding South Bay communities of Chula Vista (including Rancho del Rey and Eastlake) and National City. The freeway also leads into the relatively new business parks near University City (via Governor Drive and La Jolla Village Drive) and Sorrento Valley. As more companies locate along the route of Interstate 805, more traffic utilizes the route as an important connector to get from home to work. In addition to commuter traffic, the freeway is one of two north-south freeways that reach Mexico. Traffic to and from the border is also very common along Interstate 805.

The 805 also includes a towering bridge over Mission Valley and Interstate 8, including San Diego County's only symmetrical stack interchange. The Jack Schrade Interchange includes the Mission Valley Viaduct, a towering reinforced Concrete viaduct built in 1972 In the US state of California, Interstate 8 is designated for, from Sunset Cliffs Boulevard in San Diego to the California- Arizona A stack interchange is a free-flowing junction between two or more roads that allows turning in all directions

History

Plans for the 805 were passed in legislature in 1959 as Legislative Route Number 241. The year 1959 ( MCMLIX) was a Common year starting on Thursday (link will display full calendar of the Gregorian calendar. It was approved as a chargeable interstate in 1958, and declared a signed state route in 1964. Year 1958 ( MCMLVIII) was a Common year starting on Wednesday (link will display full calendar of the Gregorian calendar. Year 1964 ( MCMLXIV) was a Leap year starting on Wednesday (link will display full calendar of the 1964 Gregorian calendar. The freeway was then built between 1970 and 1975.

A major expansion of the 805-5 merge zone was opened to traffic on April 3rd, 2007. Including HOV Lanes and local bypass lanes, this merge spans 22 lanes at the widest point. In Transportation engineering and Transportation planning, a high-occupancy vehicle lane (or HOV lane) is a lane reserved for Vehicles with Work is also underway to add two HOV Lanes between State Route 52 and Mira Mesa Boulevard. In Transportation engineering and Transportation planning, a high-occupancy vehicle lane (or HOV lane) is a lane reserved for Vehicles with State Route 52 is a California State Highway in San Diego County, that extends from La Jolla Parkway at Interstate 5 in La Jolla to Route

As of 2007, a three-year project is underway to allow robot controlled vehicles, including buses and trucks, to use a special lane. The driverless car concept embraces an emerging family of highly automated cognitive and control technologies ultimately aimed at a full "taxi-like" experience for car users The intention is to allow the vehicles to travel at shorter following distances and thereby allow more vehicles to use the lanes. The vehicles will still have drivers since they need to enter and exit the special lanes. The system is being designed by Swoop Technology, based in San Diego county. ^[3]

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 entire route is in San Diego County. San Diego County is a County located on the Pacific Ocean in the far southwest of the U

Location	Postmile [4][5][6]	#[7]	Destinations	Notes
San Diego	0. An exit number is a number assigned to a Road junction, usually an exit from a Freeway. 15		Mexico (San Ysidro Port of Entry) (I-5)	Southbound exit and northbound entrance
	0. The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. San Ysidro is a community within the city of San Diego California. Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts 15		Camino de la Plaza	Southbound exit and northbound entrance
	0. 65	1A	San Ysidro Boulevard
	1. 81	1B	SR 905
	2. State Route 905 is a State highway in San Diego California that connects Interstate 5 and Interstate 805 in San Ysidro to the 90	2	Palm Avenue
Chula Vista	3. Chula Vista ( is a city in southern San Diego County, California, United States. 65	3	Main Street, Auto Park Drive
	4. 42	4	Orange Avenue
	6. 06	6	L Street, Telegraph Canyon Road
	7. 16	7	H Street	Signed as exits 7A (east) and 7B (west) southbound
	7. 76	7C	E Street, Bonita Road (CR S17)	Northbound exit is part of exit 7
	8. County Route S17 (CR S17 runs through National City California and Chula Vista California. 85	8	SR 54	Signed as exit 9 southbound
National City	9. State Route 54 is a California State Highway in San Diego that connects Interstate 5 to the city of El Cajon. National City is a city in San Diego County, California, United States. 05	9	Sweetwater Road	Signed as exit 8 southbound
	10. 28	10	Plaza Boulevard
San Diego	11. 31	11A	43rd Street	Signed as exit 11B southbound; former SR 252
	R11. Below is a list and summary of some of the deleted State highways (i 36	11B	47th Street, Palm Avenue – National City	Signed as exit 11A southbound
	12. National City is a city in San Diego County, California, United States. 34	12A	Imperial Avenue
	12. 95	12B	Market Street
	13. 51	13A	SR 94 (M. State Route 94 in the US state of California is the Martin Luther King Jr L. King Jr. Freeway)	Southbound exit to SR 94 west is via exit 14
	13. 95	13B	Home Avenue
	14. 64	14	SR 15 north	Northbound exit and southbound entrance
	14. State Route 15 in the US state of California is the seamless 5 64	14	SR 15 south	Southbound exit and northbound entrance
	15. State Route 15 in the US state of California is the seamless 5 95	15	North Park Way, University Avenue
	16. 43	16	El Cajon Boulevard
	16. El Cajon Boulevard is a major east-west thoroughfare through San Diego, La Mesa and El Cajon, California 99	17A	Adams Avenue, Madison Avenue	Southbound exit and northbound entrance
	17. 65	17B	I-8 – Beaches, El Centro	Signed as exit 17 northbound
	18. In the US state of California, Interstate 8 is designated for, from Sunset Cliffs Boulevard in San Diego to the California- Arizona 89	18	Murray Ridge Road, Phyllis Place
	20. 23	20A	Mesa College Drive, Kearny Villa Road	Northbound exit and southbound entrance
	20. 60	20B	SR 163 north (Cabrillo Freeway) – Escondido	Northbound exit and southbound entrance
	20. State Route 163, also named the Cabrillo Freeway, is an 11 Mile (18 km) stretch of Freeway which was once the southern end of U State Route 163, also named the Cabrillo Freeway, is an 11 Mile (18 km) stretch of Freeway which was once the southern end of U Escondido ( "eskun-DEE-doe") is a city located in northern San Diego County California just north of the city of San Diego. 60	20	SR 163 south (Cabrillo Freeway) – Downtown San Diego	Southbound exit and northbound entrance
	21. State Route 163, also named the Cabrillo Freeway, is an 11 Mile (18 km) stretch of Freeway which was once the southern end of U State Route 163, also named the Cabrillo Freeway, is an 11 Mile (18 km) stretch of Freeway which was once the southern end of U Downtown San Diego (also referred to as Centre City) is the city center of San Diego, California, U 65	21	Balboa Avenue	Former SR 274
	22. Below is a list and summary of some of the deleted State highways (i 56	22	Clairemont Mesa Boulevard
	23. 65	23	SR 52
	24. State Route 52 is a California State Highway in San Diego County, that extends from La Jolla Parkway at Interstate 5 in La Jolla to Route 44	24	Governor Drive
	25. 48	25A	Nobel Drive	Northbound exit and southbound entrance
	25. 94	25B	La Jolla Village Drive, Miramar Road
	27. 07	27	Mira Mesa Boulevard, Vista Sorrento Parkway, Sorrento Valley Road	Signed as exits 27A (Mira Mesa Boulevard, Vista Sorrento Parkway) and 27B (Sorrento Valley Road) northbound
	28. 05		SR 56 east	Northbound exit and southbound entrance
	28. State Route 56 runs from Interstate 5 in the Carmel Valley neighborhood of San Diego to Interstate 15. 05		I-5 north (San Diego Freeway) – Los Angeles	Northbound exit and southbound entrance

References

External links

• California @ WestCoastRoads.com - Interstate 805
• California Highways: I-805