September 25, 1967 In Southern California, a groundbreaking ceremony was held at El Cajon Boulevard and Boundary Street in San Diego for Interstate 805 (I-805). Planning for that route dated back to 1956, the same year in which the Interstate Highway System itself first came into existence. After the groundbreaking ceremony, I-805 was constructed in phases. It […]
Construction Begins on an Interstate Highway in California — Transportation History
