Kellams Bridge, officially the Kellams–Stalker Bridge, spans the Delaware River between Pennsylvania and New York and is the only remaining underspanned suspension bridge in the United States. The crossing began as William Kellam’s ferry from 1860 to 1888, then became a toll bridge built in 1889 by David Kellam for the Little Equinunk Bridge Company. Long tied to local travel, trade, and the nearby Erie Railroad dock, it later passed into public ownership in 1932. Repeated closures, protests, accidents, storm damage, and structural problems led to major repairs in 1936, 1990, 2006, and 2018, preserving this rare and important crossing.