High Quality Content by WIKIPEDIA articles! State Route 73 (SR 73) is a state highway in the U.S. state of California, running from the junction with Interstate 405 in Irvine through the San Joaquin Hills to its junction with Interstate 5 in San Juan Capistrano, its northern and southern terminii, respectively. The entirety of the route is located in Orange County. From its northern terminus, the first three miles (5 km) of the highway are called the Corona del Mar Freeway; this section of highway opened in 1978. The next 12 miles (19 km) of the 15-mile (24 km) highway, completed in November 1996, are a toll road operated by the San Joaquin Hills Transportation Corridor Agency named the San Joaquin Hills Transportation Corridor. Its alignment follows an approximately parallel path between the Pacific Coast and the San Diego freeways. There are no HOV lanes currently, but the medians have been designed with sufficient clearance for their construction should the need arise in the...