What is state road 618?

State Road 618, also known as the Selmon Expressway, is a toll road that runs east-west through Hillsborough County, Florida. It begins at Gandy Boulevard and ends at downtown Tampa, where it connects with the Lee Roy Selmon Expressway. The road is 14.1 miles long and has two lanes in each direction for most of its length, with a reversible lane in the middle. The speed limit on the Selmon Expressway is 65 mph, with a variable pricing system that adjusts tolls based on traffic volume. It was opened to traffic in 1976 and is named after former Tampa Bay Buccaneers football player Lee Roy Selmon. The road provides faster access to downtown Tampa, the Port of Tampa, and Tampa International Airport, and is heavily used by commuters, tourists, and commercial vehicles.