Overview
The Ventura Freeway is a freeway in southern California, United States, running from the Santa Barbara/Ventura county line to Pasadena in Los Angeles County. It is the principal east–west route (designated north–south) through Ventura County and in the southern San Fernando Valley in Los Angeles County. From the Santa Barbara County line to its intersection with the Hollywood Freeway in the southeastern San Fernando Valley in Los Angeles (the Hollywood Split), it is signed as U.S. Route 101 (US 101), which was built in the late 1950s and opened on April 5, 1960. The segments from the Santa Barbara County line to Sea Cliff, and from Solimar Beach to Oxnard, are also concurrent with State Route 1 (SR 1), although actual signage mentioning SR 1 through these portions are nonexistent. East of the Hollywood Freeway intersection, the Ventura Freeway is signed as State Route 134 (SR 134), which was built by 1971.
Prior to the construction of a new alignment in 1971, the portion east of the Golden State Freeway was known as the Colorado Freeway in reference to nearby Colorado Boulevard, a historic thoroughfare in Pasadena and northeastern Los Angeles.
Route description
U.S. Route 101
The Ventura Freeway begins at the Santa Barbara/Ventura county line, west of La Conchita, as US 101. It travels eastward through the citrus orchards and strawberry fields of the Oxnard Plain before ascending the short, steep Conejo Grade into the Conejo Valley. Continuing eastward through the northern Santa Monica Mountains, it crosses the Ventura/Los Angeles county line before entering the San Fernando Valley. The freeway continues eastward along the valley's southern rim, crossing the San Diego Freeway (Interstate 405) near Sherman Oaks at an interchange consistently rated as one of the five most congested in the nation. It then reaches an interchange with the Hollywood Freeway known as the Hollywood Split. Here, the US 101 designation switches to the southeast-bound Hollywood Freeway, while the Ventura Freeway becomes SR 134 as it continues eastward. The northwest-bound portion of the Hollywood Freeway is designated as SR 170.
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