California 177 connects Interstate 10 with California 62 east of Joshua Tree National Park and the Coxcomb Mountains in western Riverside County north of Desert Center and east of Vidal Junction. There are no services along the route except near the Interstate 10 interchange.
The original road that today carries California 177 was constructed in support of the Colorado Aqueduct, which carries water from the Colorado River to Greater Los Angeles. The road (including all of California 177 and the eastern portion of California 62) was built by Metropolitan Water District between U.S. 60 in Desert Center and Earp (near the Colorado River). Construction began on February 20, 1933, and was completed on August 4, 1933.1
|At the northern end of California 177 is this end shield, which is posted at the intersection with California 62. Ahead, California 177 north transitions directly onto California 62 east. Photos taken 02/25/06.|
|As California 177 ends, California 62 west turns left toward Twentynine Palms and Yucca Valley. Continue straight ahead to follow California 62 east toward Parker, Arizona. Photo taken 02/25/06.|
|California 177 south|
|A survey postmile is located along southbound California 177 after the California 62 intersection. Photo taken 02/25/06.|
|With the Coxcomb Mountains rising in the distance, California 177 briefly travels southwest before turning south generally to follow the Colorado River Aqueduct toward Desert Center and Interstate 10. Photo taken 02/25/06.|
|A power line crosses California 177 as the highway continues its journey south toward Desert Center. This particular power line follows the Colorado River Aqueduct, which conveys water to the millions of people who live in urbanized Southern California. It is owned by the Los Angeles Department of Water and Power, and was erected as a transmission facility in 1936. The aqueduct follows California 177 south for its entire length, then turns west to follow Interstate 10 toward the Coachella Valley. Note that the aqueduct does not cross California 177 at any time; it remains west of the state route for its entire duration. The aqueduct brings water from the Colorado River west to greater Los Angeles. For more on the aqueduct, visit the Colorado Aqueduct official site offered by the Metropolitan Water District. Photo taken 02/25/06.|
|Skipping ahead, southbound California 177 approaches its southern terminus in Desert Center. The junction with Interstate 10 is a standard diamond interchange, and an end shield is posted on southbound underneath the twin bridges that carry Interstate 10 overhead. Photo taken 01/17/05.|
|California 177 is signed with an end shield, just as it is at the California 62 junction near Granite Pass west of Rice. A zero postmile is placed next to the end shield. Photo taken 01/17/05.|
- Chapter 7 - Construction Utilities from MWD' History & First Annual Report, Commemorative Edition, published 1939
Page Updated March 22, 2012.