On I-10, a couple of miles west of Mobile and the I-10 -- I-65 intersection, take Exit 17 to State Highway 193 South. Signs clearly indicate the direction to Dauphin Island. At this point DI is approx. 26 miles away. You will navigate two Stop signs on this small state road. At about 20 miles down the road suddendly the waters of Mobile Bay appear. The causway runs along with Mobile Bay on the left side and Mississippi Sound on the right. Next will be a 3 & 1/3 mile bridge. At the end of the bridge, Dauphin Island. Proceeding straight, one will find the "Watertowner" intersection. To the left, or east, ferry landing, RV park, Dauphin Island Sea Lab and the Extuarium, and Fort Gaines. To the right, or west, beach houses and condos and the public beaches.