The New Tappan Zee Bridge, also known as the New NY Bridge and officially named the Governor Mario M. Cuomo Bridge after the late former governor Mario Cuomo, is a twin cable - stayed bridge being built to replace the current original Tappan Zee Bridge over New York 's Hudson River. The new bridges are to the north of and roughly parallels the existing Tappan Zee Bridge, and cross the Hudson River at east - to - west direction. In the final configuration, the north span will carry the northbound traffic of I - 87, westbound traffic of I - 287, and a bicycle / pedestrian path, with the south span that will carry southbound and eastbound traffic of I - 87 and I - 287, respectively. Construction began in 2013, and at 1: 36 A.M. on August 26, 2017, the north span officially opened to westbound traffic. Eastbound traffic is expected to be switched onto the same span on October 6, 2017 at which time the old bridge will be decommissioned and demolished. Both spans are expected to be operational by June 15, 2018.
when will the tappan zee bridge be finished
Both spans are expected to be operational by June 15, 2018