State Road 80 (SR 80) (also known as Palm Beach Boulevard in Lee County and Southern Boulevard in Palm Beach County) is a 123.5 miles (198.8 km) route linking US 41 Business in Fort Myers and State Road A1A in Palm Beach. The road is the northernmost of three linking Southwest Florida to South Florida via the Everglades (Alligator Alley and Tamiami Trail being the other two). Due to increasing traffic, State Road 80 has experienced upgrades and widening in various sections since 2000.