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Travelers to here from the northern parts of the Turnpike Extension can continue south along US 1 to the Florida Keys or the Everglades National Park (via SR 9336). The road begins at its south end at a partial interchange with US 1 in Florida City next to the Florida Keys Outlet Center, where the road heads northeast as a four lane expressway. Due to its alignment, it acts as a de facto outer beltway for Miami, with the Palmetto Expressway ( State Road 826) forming an inner beltway. It was opened in stages between 19, after the mainline of the Turnpike was completed, and is used by both commuters and travelers to the Florida Keys and Everglades National Park. Despite their designations as different state roads, the mainline and the extension are continuous in their exit numbering. Route 1 (US 1) in Florida City, and transitions into the SR 91 mainline in Miramar at its northern end. The extension begins at its southern terminus at U.S.
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Spanning approximately 48 miles (77 km) along a north–south axis, it supplements the 265-mile (426 km) mainline (designated as SR 91) to form the complete 309-mile (497 km) turnpike. state of Florida maintained by Florida's Turnpike Enterprise (FTE). The Homestead Extension of Florida's Turnpike ( HEFT), designated as unsigned State Road 821 ( SR 821), is the southern extension of Florida's Turnpike, a toll road in the U.S. US 41 in University Park, Sweetwater and Tamiami.
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