 From here, US 13 leaves the Chesapeake Bay Bridge–Tunnel and continues through Northampton County, which is in the Eastern Shore region of the state on the Delmarva Peninsula.The route heads north on the Charles M. Lankford Jr. Highway (usually shortened to Lankford Highway), a four-lane divided highway that serves as the main north–south highway in the region.The road intersects the southern terminus of SR 600 west of the Eastern Shore of Virginia National Wildlife Refuge and runs through a mix of farmland and woodland with some residential and commercial development a short distance to the east of the Chesapeake Bay.