Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. State Route 75 (SR 75) is a short, 13-mile (21 km) expressway in the U.S. state of California. It is a loop route of Interstate 5 in the Barrio Logan Community in San Diego and the route ends at Interstate 5 in South San Diego near San Ysidro. It includes the San Diego-Coronado Bay Bridge, a bridge that traverses the San Diego Bay and directly passes through Coronado with the mainland, continuing down along the Silver Strand, a thin strip of land, before joining back with Interstate 5 in South San Diego.