Boston subway lines, train crossing Longfellow bridge over scenic Charles river

america american boston massachusetts means of transport metro no people north america u bahn us america us american usa united states united states of america body of water bridge deserted empty line local traffic local transport means of transportation metro no one nobody passenger traffic passenger transport picturesque picturesquely public transport public transportation rail traffic railroad railway river scenic short range public transportation short range transit station subway train transport transportation transporting people underground uninhabited water waterfront