ⓘ California State Route 75
State Route 75 is a 13-mile expressway in San Diego County, California. The state highway is a loop route of Interstate 5 that begins near Imperial Beach, heading west on Palm Avenue. The route continues north along the Silver Strand, a thin strip of land, through Silver Strand State Beach. SR 75 passes through the city of Coronado as Orange Avenue and continues onto the San Diego–Coronado Bay Bridge, which traverses the San Diego Bay, before joining back with I-5 near downtown San Diego at a freeway interchange.
Highway silver strand was built and opened to the public in 1924. That would be the SR-75 was added to the state highway system in 1933, and designated legislative route 199 in 1935. SR 75 was formally presented to the state highway renumbering in 1964. Coronado Bay bridge opened in 1969, and established a direct link between San Diego and Coronado. Since then various proposals have taken place to ease commuter traffic between San Diego and the naval aviation North island station, which crosses the city of Coronado. However, none of these proposals received support, including an attempt in 2010.