 US 301 and US 50 parallel MD 18 across the Kent Narrows onto the mainland of the Delmarva Peninsula, then the freeway continues through more right-in/right-out interchanges in Grasonville before the U.S.Highways diverge at Queenstown.US 301 reduces to a four-lane non-freeway divided highway with a speed limit of at its partial interchange with US 50 (Ocean Gateway).