Cars and driving
Card Sound Road is the Upper Keys route with its own toll
Card Sound Road gives drivers another Upper Keys road-trip choice between Florida City and Key Largo, with bridge tolls, mangrove scenery, and current payment details to check.
Card Sound Road is one of those Florida routes that feels like a local choice.
Most first-time Keys drivers think about U.S. 1 and the long run toward Key Largo. Card Sound Road gives another way into the Upper Keys from the Florida City side. It runs through a quieter stretch before crossing Card Sound Bridge into Monroe County.
The route has its own rhythm. You get mangroves, water, a bridge, and a slower approach to Key Largo. You also get a toll, and that detail should be checked before the drive, especially in a rental car or a car with an out-of-date plate address. Monroe County posts Card Sound Toll Authority rates and SunPass details, and those numbers can change.
This is not a secret shortcut that fixes every Keys traffic day. It can still be affected by storms, road work, events, and the same limited island geography that shapes the rest of the Keys. Think of it as another route with its own feel and its own payment setup.
Before choosing it, check toll details, Keys traffic, weather, and your return route. If you have time, Card Sound can make the drive feel more like an arrival and less like a straight shot down the map.
Where to see it
Card Sound Road between Florida City and North Key Largo. Check Monroe County Card Sound Toll Authority information, SunPass or Toll-By-Plate details, weather, and Keys traffic before choosing the route.
Connected places
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Official sources
Last checked against these sources: July 5, 2026.
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