United States > California > Ventura County > MalibuView overlooking the beach east of Point Mugu. A part of Roosevelt Highway/US 101A can be seen on the left.This section of Pacific Coast Highway was formally dedicated as the 'Theodore Roosevelt Highway' when it was completed in 1929 and was generally known as the 'Roosevelt Highway' or 'Coast Highway' in the 1930s. It was designated as US 101A (Alternate) in 1936. State legislative action in 1964 changed many highway numbers in California, and US 101A became CA 1. In the same year, the state legislature offically named CA 1 'Pacific Coast Highway' in Orange, Los Angeles and Ventura Counties.