The Roosevelt Island Tramway is an aerial tramway in New York City that spans the East River and connects Roosevelt Island to Manhattan. Prior to the completion of the Mississippi Aerial River Transit in May 1984 and the Portland Aerial Tram in December 2006, it was the only commuter aerial tramway in North America. Over 26 million passengers have used the tram since it began operation in 1976. Each cabin has a capacity of up to 110 people and makes approximately 115 trips per day.