Collar City BridgeThe Collar City Bridge carries New York [State Route 7|NYS Route 7] across the Hudson River connecting Colonie, New York, with Troy, by way of passing over Green [Island, New York|Green Island].HistoryThe bridge had been planned since the 1950s, but did not open to traffic until 1981 connecting Troy and Green Island to I-787. By the end of the decade, the NY 7 Freeway was completed with a connection to the bridge. The bridge's official name, a reference to the City of Troy's nickname, was selected by an elderly couple in nearby Berlin.