The Tidewater region of Virginia is a term used to refer to the eastern portion of the Commonwealth of Virginia. Four of the constituent states of the United States officially designate themselves Commonwealths: Kentucky, Massachusetts, Pennsylvania The Commonwealth of Virginia ( is an American state The term "Tidewater" may be correctly applied to all portions of Virginia where the water level is affected by the tides. In general, this is most of the land east of I-95, which runs between major cities along the fall line, and north of U.S. 460. In the Commonwealth of Virginia, Interstate 95 runs through the state In Geomorphology, a fall line (at times referred to as a fall zone) marks the area where an upland region (continental Bedrock) and a Coastal plain US Route 460 is a spur of US Route 60. It currently runs for 655 miles (1054 km from Norfolk Virginia at U It includes Hampton Roads, rest of the Virginia Peninsula, the Middle Peninsula, the Northern Neck, and the Eastern Shore. Hampton Roads is the name of both a body of water and the region of land areas which surround it in southeastern Virginia in the USA. The Virginia Peninsula is a Peninsula in southeast Virginia, bounded by the York River, James River, Hampton Roads and Chesapeake The Middle Peninsula is as its name implies the middle of three major Peninsulas on the western shore of The Northern Neck is the northernmost of three Peninsulas on the western shore of the Chesapeake Bay