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

US Route 62 and US Route 180 in the Guadalupe Mountains

US Route 62/US Route 180 between El Paso, Texas and Carlsbad, New Mexico passes through the Guadalupe Mountains.  The Guadalupe Mountains comprise the highest peaks of Texas which are largely protected as part Guadalupe Mountains National Park.  The automotive highway through the Guadalupe Mountains was constructed in the late 1920s as part of Texas State Road 54.  US Route 62 was extended from Carlsbad through the Guadalupe Mountains to El Paso during 1932.  US Route 62 was joined in the Guadalupe Mountains by US Route 180 in 1943.  The Guadalupe Mountains comprise a portion of the 130 mile "No Services" zone on US Route 62/US Route 180 between El Paso-Carlsbad. Part 1; the history of US Route 62 and US Route 180 in the Guadalupe Mountains The Guadalupe Mountains lie within the states of Texas and New Mexico.  The Guadalupe Mountains essentially is a southern extension of the larger Rocky Mountains.  The Guadalupe Mountains is the highest range in Texas with the peak elevati

Paper Highways; unbuilt California State Route 100 in Santa Cruz

This edition of Paper Highways examines the unbuilt California State Route 100 in Santa Cruz. The History of Unbuilt California State Route 100 The route that became CA 100 was added to the State Inventory in 1959 as part of the Freeway & Expressway System as Legislative Route 287 .  According to CAhighways.org the initial definition of LRN 287 had it begin at LRN 5 (CA 17) and was defined over the below alignment to LRN 56 (CA 1) through downtown Santa Cruz. -  Ocean Street -  2nd Street -  Chestnut Street For context the above alignment would required tearing down a large part of the densely populated Santa Cruz.  A modern Google imagine immediately reveals how crazy an alignment following Ocean Street, 2nd Street, and Chestnut Street would have been. LRN 287 first appears on the 1960 Division of Highways State Map . In 1961 the definition of LRN 287 was generalized to; from LRN 5 via the beach area in Santa Cruz to LRN 56 west of the San Lorenzo River. 

New Mexico State Road 7 (Carlsbad Caverns Highway)

New Mexico State Road 7 is approximately a seven-mile highway in the Guadalupe Mountains of Eddy County. New Mexico State Road 7 connects US Route 62/US Route 180 at Whites City to the visitor center of Carlsbad Caverns National Park via Walnut Canyon. The so-called Carlsbad Caverns Highway to the National Park visitor center complex was constructed following the designation of the namesake National Monument in 1923. The current iteration of New Mexico State Road 7 was designated by the New Mexico State Highway Commission during June 1929. A proposal once was once floated to connect New Mexico State Road 7 to a cavern drive which would have been blasted into Big Room. Part 1; the history of New Mexico State Road 7 What are now Carlsbad Caverns was explored in the Guadalupe Mountains of Eddy County by local Jim White during 1898.  White explored the caverns via a homemade ladder and named several of the more notable rooms.  The name "Carlsbad Caverns" was derived from the