Chicago L Elevated elevated metro railway on a bridge public transport in Chicago, USA, North America

deserted no one no people nobody uninhabited empty bridge bridges viaduct viaducts city cities town urban urban municipal urban environment rail traffic rail traffic boat boats ship ships vessel subway subways metro underground u bahn passenger traffic passenger traffic transport transports transportation traffic traffic north america usa united states us america united states of america america public transport public transport short range public transportation short range transit public transportation american means of transportation means of transportation station stations infrastructure infrastructures local traffic local transport local transport system arch bridge arch bridges arched bridge us american means of transportation means of transportation means of transport orthographic orthographical vertical elevated railway elevated railways monorail train passenger transport passenger transports transporting people metro metros illinois chicago railway train trains railways railroad railroads