The Pinellas Bayway System is a series of bridges on two state roads in Pinellas County, Florida. It is a toll road complex maintained and operated by the Florida Department of Transportation. It also is compatible with the SunPass ETC system currently in use on all other FDOT-owned toll roads. The Pinellas Bayway consists of:State Road 682, an east–west divided highway connecting SR 699 on a Gulf of Mexico barrier island near St. Pete Beach, Florida to Interstate 275 and US 19 in St. Petersburg. The 3.7-mile-long State Road 682 passes over three bridges (toll:$1.00) as it crosses the entrance of Boca Ciega Bay. State Road 679, a hook-shaped north–south road with a four-lane divided northern half and a two-lane southern half serving Fort De Soto Park at the tip of the "hook". Motorists traveling the entire length of SR 679 traverse two bridges.

Locally known as Gulf Boulevard and Blind Pass Road, State Road 699 is a 15-mile-long road running the length of the Pinellas County barrier islands in the Gulf of Mexico and serving the popular beaches near St. Petersburg, Clearwater, and Largo. The southern terminus of SR 699 is at the extreme western end of Pinellas Bayway in St. Pete Beach; the northern terminus is the extreme western end of SR 688 in Indian Rocks Beach. State Road 699 is the closest Gulf Coast analog to SR A1A on the Atlantic coast of Florida: indeed, the southernmost two miles (3 km) of SR 699 are part of a loop that Florida Department of Transportation designated as A19A.