Skip to main content

Interstate 805

Recently while visiting the San Diego Area I drove a portion of Interstate 805 in northern San Diego to California State Route 163.


I-805 is a 28 mile spur route of I-5 which begins in northern San Diego and ends near the Mexican Border in the southern extent of the City in San Ysidro.  I-805 was approved as a chargeable Interstate in 1958 and was added to State Highway System as Legislative Route Number 241 in 1959 according to CAhighways.org.

CAhighways.org on I-805

The planned route of I-805 on LRN 241 first appears on the 1960 State Highway City Insert.

1960 State Highway Map City Insert

According to CAhighways.org construction of I-805 began in 1966 and was completed by 1975.  The 1970 State Highway Map City Insert shows I-805 under construction between CA 274 south to CA 15 (future CA 15) and in Chula Vista.

1970 State Highway Map City Insert

I-805 is shown as fully completed on the 1975 State Highway Map City Insert.

1975 State Highway Map City Insert

My approach to I-805 was on southbound I-5 in northern San Diego.  I-805 is known as the "Jacob Dekema Freeway" and was named after a long term Division of Highways/Caltrans engineer who served from 1938 to 1980.




Signage on I-805 south indicates I-8 is 10 miles away and the International Border on I-5 as 30 miles away.


Exit numbers on I-805 descend starting from Exit 27 at Mira Mesa Boulevard/Sorrento Valley Road.


Many freeways in San Diego including I-805 contain somewhat ornate modern bridge designs such as the Eastgate Mall overpass.



Exit 25B on I-805 south accesses Miramar Road and La Jolla Village Drive.


Exit 24 on I-805 south accesses Governor Road.


The first major junction on I-805 south is at Exit 23 which accesses CA 52/San Clemente Canyon Freeway.




Exit 22 on I-805 south accesses Clairemont Mesa Boulevard.


At Exit 21 I-805 south accesses Balboa Avenue which is former CA 274.  All of CA 274 was deleted in 1999 and relinquished by 2001.


At Exit 20 I-805 meets former US 395 on CA 163/Cabrillo Freeway.  I turned south on CA 163 and headed towards downtown San Diego.



Comments

Popular posts from this blog

Morgan Territory Road

Morgan Territory Road is an approximately 14.7-mile-long roadway mostly located in the Diablo Range of Contra Costa County, California.  The roadway is named after settler Jerimah Morgan who established a ranch in the Diablo Range in 1857.  Morgan Territory Road was one of several facilities constructed during the Gold Rush era to serve the ranch holdings.   The East Bay Regional Park District would acquire 930 acres of Morgan Territory in 1975 in an effort to establish a preserve east of Mount Diablo. The preserve has since been expanded to 5,324 acres. The preserve functionally stunts the development along roadway allowing it to remain surprisingly primitive in a major urban area. Part 1; the history of Morgan Territory Road During the period of early period of American Statehood much of the Diablo Range of Contra Costa County was sparsely developed.   Jerimah Morgan acquired 2,000 acres of land east of Mount Diablo in 1856 and established a ranch in 1857. Morgan Territory Road is

Interstate 210 the Foothill Freeway

The combined Interstate 210/California State Route 210 corridor of the Foothill Freeway is approximately 85.31-miles.  The Interstate 210/California State Route 210 corridor begins at Interstate 5 at the northern outskirts of Los Angeles and travels east to Interstate 10 in Redlands of San Bernardino County.  Interstate 210 is presently signed on the 44.9-mile segment of the Foothill Freeway between Interstate 5 and California State Route 57.  California State Route 210 makes up the remaining 40.41 miles of the Foothill Freeway east to Interstate 10.  Interstate 210 is still classified by the Federal Highway Administration as existing on what is now signed as California State Route 57 from San Dimas south to Interstate 10.  The focus of this blog will mostly be on the history of Interstate 210 segment of the Foothill Freeway.   Part 1; the history of Interstate 210 and California State Route 210 Interstate 210 (I-210) was approved as a chargeable Interstate during September of

Old Sonoma Road

  Old Sonoma Road is an approximately five-mile highway located in the Mayacamas Mountains of western Napa County.  The roadway is part of the original stage road which connected Napa Valley west to Mission San Francisco Solano as part of El Camino Real.  Much of Old Sonoma Road was bypassed by the start of the twentieth century by way of Sonoma Highway.  A portion of Old Sonoma Road over the 1896 Carneros Creek Bridge (pictured as the blog cover) was adopted as part of Legislative Route Number 8 upon voter approval of the 1909 First State Highway Bond Act.  The 1896 Carneros Creek Bridge served as a segment of California State Route 37 and California State Route 12 from 1934 through 1954.  Part 1; the history of Old Sonoma Road Old Sonoma Road has origins tied to the formation of Mission San Francisco Solano and the Spanish iteration of El Camino Real.  Mission San Francisco Solano was founded as the last and most northern Spanish Mission of Alta California on July 4, 1823.  The new M