ⓘ California State Route 52
State Route 52 is a state highway in San Diego County, California, that extends from La Jolla Parkway at Interstate 5 in La Jolla, San Diego, to SR 67 in Santee. It is a freeway for its entire length and serves as a major east–west route through the northern part of the city of San Diego. The road connects the major north–south freeways of the county, including I-5, I-805, SR 163, I-15, SR 125, and SR 67. SR 52 passes north of the Rose Canyon Fault before traversing Marine Corps Air Station Miramar. East of Santo Road and west of SR 125, the highway goes through Mission Trails Regional Park, a large open preserve. SR 52 is also known as the Soledad Freeway and the San Clemente Canyon Freeway.
Plans for a route between La JOLLA and Santee date from 1959, and SR 52 was officially designated in the state highway renumbering in 1964. Construction began in 1966 on the I-5 interchange with Ardath road in La JOLLA. It continued with the building of the San Clemente Canyon road, which was later extended to become SR 52. The highway was completed East to I-805 in 1970, and was built in two stages from there to Santo road, East of interstate 15, the Last phase was completed in 1988.
Freeway East of Santo road delays from environmentalists at least disappearing bells Vireo, a songbird which faced destruction of habitat, as well as associated with destruction of homes and businesses to the highway road. The extension to mission gorge road opened in 1993, and SR 52 was completed to SR 125 in 1998. Funding issues delayed the completion of the route until 2011, more than fifty years after construction began, until, in Santee has faced congestion. Widening project was completed in 2007 between Santo road and mast Boulevard, further expansion has been suspended due to state budget problems.