California State Route 75
State Route 75 (SR 75) is a 13-mile (21 km) north-south state highway in San Diego County in the U.S. state of California. It is a loop route of Interstate 5 (I-5) that begins near Imperial Beach, heading west on Palm Avenue. The route continues north along the Silver Strand, a thin strip of land between the Pacific Ocean and San Diego Bay, through Silver Strand State Beach. SR 75 then passes through the city of Coronado as Orange Avenue and continues onto the San Diego–Coronado Bay Bridge, which traverses the bay, before joining back with I-5 near downtown San Diego.
State Route 75 | ||||
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State Route 75 highlighted in red | ||||
| Route information | ||||
| Maintained by Caltrans | ||||
| Length | 13.306 mi (21.414 km) | |||
| Existed | 1924–present | |||
| Tourist routes | Silver Strand Highway and the San Diego–Coronado Bridge | |||
| Restrictions | No flammable tank vehicles or explosives on the Coronado Bridge | |||
| Major junctions | ||||
| South end | I-5 near San Ysidro | |||
| SR 282 in Coronado | ||||
| North end | I-5 in San Diego | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | San Diego | |||
| Highway system | ||||
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The Silver Strand Highway was constructed and open to the public by 1924. What would become SR 75 was added to the state highway system in 1933, and designated Legislative Route 199 in 1935. SR 75 was not officially designated until the 1964 state highway renumbering. The Coronado Bay Bridge opened in 1969, and provided a direct connection between San Diego and Coronado. Since then, various proposals have taken place to relieve commuter traffic between San Diego and Naval Air Station North Island that traverses the city of Coronado. However, none of these proposals have gained support, including an attempt in 2010.