State Road 510 (SR 510) is a 2.606-mile-long (4.194 km) state highway in northern Indian River County, extending from U.S. Route 1 (US 1) in Wabasso to SR A1A in Orchid. The route acts primarily as a bridge across the Indian River, known as the Wabasso Causeway, the northernmost crossing of the Intracoastal Waterway in Indian River County. The entire highway is on the Indian River Lagoon Scenic Highway.