New Castle and Frenchtown Railroad Right-of-Way is a railroad right of way connecting Frenchtown, Cecil County, Maryland, and Porter, New Castle County, Delaware. The New Castle and Frenchtown Railroad originally crossed the Delmarva Peninsula from a wharf in New Castle to a wharf at Frenchtown on the Elk River in Maryland. This part of the right-of-way is abandoned for railroad purposes, although parts of it serve as county roads. It was listed on the National Register of Historic Places in 1976.