The five mile stretch of peninsula of State Highway 163 South inside the city limits of Mobile, Alabama, is bordered on the east by Mobile Bay while to the west and south by Dog River. Perch Creek cuts across the highway around the 4.5 mile mark connecting Dog River on the west and McNally Park to the east. The northern end of the highway is cut off from the peninsula by Interstate 10. Dauphin Island Parkway, as it is known, was once the main artery leading to the beaches of Dauphin Island and the Gulf of Mexico. The first four miles of the uniquely placed community is a mixture of commercial and residential properties while the final mile-plus is primarily sensitive intertidal marshes and flats relating to the convergence of the brackish water of the bay and the fresh waters of Perch Creek and Dog River.

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