Driving from Miami to Galveston? Not Possible by Road Alone

You cannot drive directly from Miami, FL to Galveston, TX. Galveston is a barrier island completely surrounded by water (Gulf of Mexico, Galveston Bay). Access is only via:

• I-45 causeway from the mainland (Houston area).
• Ferry (Bolivar Flats, limited).
• Boat or air.

To reach Galveston by car from Miami: drive ~1,100 miles (17 hrs) to Houston via I-10, then cross the causeway to the island.