Route map: Template:Attached KML/First Avenue (Manhattan) KML is from Wikidata First Avenue is a north-south thoroughfare on the East Side of the New York City borough of Manhattan, running from Houston Street northbound to 127th Street. At 125th Street, most traffic continues onto the Willis Avenue Bridge over the Harlem River, which continues into the Bronx. South of Houston Street, the roadway continues as Allen Street south to Division Street. Traffic on First Avenue runs northbound (uptown) only. From Wikipedia