Interstate 95 is the major expressway connecting South Florida with points north; State Road 836 is the major east–west expressway and connects to Florida's Turnpike, State Road 826, and Interstate 95. Seven causeways link Miami and Miami Beach, with I–195 and I–395 offering the most convenient routes; the Rickenbacker Causeway extends to Key Biscayne from I–95 and U.S. 1. The high-speed lanes on the left-hand side of I–95 require a prepaid toll pass called a "Sunpass," available in most drug and grocery stores or can be ordered by mail before your trip. It is sometimes included with your rental car (but you are billed for the tolls and associated fees later).