There have been plans in Florida for expressways, but some were never constructed due to financial problems, community opposition and environmental issues.
Southeast Florida
In the 1970s, most proposed new expressways in South Florida were cancelled after voters chose to direct funding away from roads toward mass transit projects and the planned Miami Metrorail. Hialeah in particular was anti-expressway, as proposals for expressways near or through the city have been cancelled amid local opposition.
Cypress Creek Expressway: The Cypress Creek Expressway would have been a west–east expressway that would have run along the present-day Cypress Creek Road, serving Pompano Beach, Fort Lauderdale, North Lauderdale, and Tamarac. The Cypress Creek Expressway would have begun at State Road A1A (SR A1A) at the Fort Lauderdale–Pompano Beach border, and run along what is presently the eastern disjointed section of McNab Road. West of Old Dixie Highway, the road would have dipped south and run along present-day Cypress Creek Road (west of Florida's Turnpike it connects with the western disjointed section of McNab Road), until terminating at the proposed University–Deerfield Expressway (now the Sawgrass Expressway). There was no projected interchange with the Florida's Turnpike. It was to be four lanes for its entire length, and its total cost was slated at $22.6 million. It was never built due to funding and opposition.
Dolphin Expressway Airport Spur: The Dolphin Expressway was originally planned to be built on Northwest 20th Street, instead of its current alignment more or less paralleling Northwest 14th Street. A 1964 plan called for two options to solving the traffic problems near Miami International Airport. The first option was to convert LeJeune Road into an 8-lane freeway between the Dolphin Expressway and the Airport Expressway. The second option was to build a spur route from the Dolphin Expressway that would connect to the entrance of the airport, thus relieving LeJeune Road. The spur would branch off the tollway just east of NW 37th Avenue and run south–north on the west side of NW 37th Avenue. North of the golf course, it would cross the Tamiami Canal and head west to the airport's terminal entrance on Northwest 21st Street. As part of this canceled freeway project, a stack interchange was built at LeJeune Rd and Northwest 21st Street, which serves as the access road to the airport. It is today used between those two roads and the airport. In addition, as part of the Miami Intermodal Center, LeJeune Road between Northwest 14th Street and the interchange with Northwest 21st Street has recently been converted into a full freeway entirely using land obtained through demolishing businesses on the east side of a car rental agency's parking lot. The Miami Intermodal Center lies on the northeast corner of the LeJeune Road interchange with Northwest 21st Street, which is why the interchange has been improved to allow access to the new transportation hub.
Gratigny Parkway: Today's Gratigny Parkway is much shorter than it was originally supposed to be. Its original western terminus was planned to be at the Homestead Extension of Florida's Turnpike. The eastern terminus was supposed to be a few blocks short of Interstate 95. The portion east of Northwest 32nd Avenue was canceled by a combination of community opposition and race politics. The project was originally put off in the 1960s. By the time it was revived, what had originally been a mostly white neighborhood in the 1960s had become a mostly black neighborhood by the 1980s. Despite its appearance indicating otherwise, the Gratigny is not an outgrowth of some failed plot to extend I-75 toward I-95. When the Gratigny was originally planned, I-75 was being planned to follow a route along the Tamiami Trail through the Everglades and then along today's Dolphin Expressway, with a connection to the planned Everglades Jetport (which was canceled by the administration of Richard Nixon based on opposition from environmentalists and became the Dade-Collier Training and Transition Airport). After that, it was planned to follow today's route along Alligator Alley. The Gratigny continues to the west as I-75 and curves north at Northwest 138th Street/Hialeah Gardens Drive. MDX's 2025 master plan calls for a westbound extension, running concurrently with a section of I-75.