It also has the world's ninth longest cantilever span, at 1, feet. It has been determined eligible for National Register listing for its significance in the areas of transportation and engineering. Rockland County officials began to advocate for the construction of a bridge across the river to Westchester County near the present-day location of the Tappan Zee Bridge during the early 20th century.
Studies were undertaken at that time which indicated the depth of bedrock under the river bed was too great to permit bridge construction. However, the concept for a Hudson River crossing between the counties was explored again roughly 15 years later due to the creation of NYSTA in and the Federal Interstate Highway System in , which illustrated a pressing need for a Hudson River crossing between the two counties.
In response to this need, the Tappan Zee Bridge was constructed between and Navy Retired , served as chief engineer for Madigan-Hyland, designers of the bridge. To solve the depth to bedrock problem identified in the s, Praeger- who also designed Shea and Dodger Stadiums, the Nebraska State Capitol, and the world's largest telescope in Arecibo, Puerto Rico- developed an innovative system in which eight buoyant caissons were constructed north of the crossing site in a natural clay pit in Grassy Point, the world's largest natural dry dock.
Upon their completion, the clay pit was flooded and the caissons were floated downriver into place. The completed bridge is a 3. The piers are erected upon four types of foundations, including river-based timber piles and the eight buoyant caissons. Piers in the river are protected by upstream and downstream ice breakers, and the caissons are also protected by a fender system.
In the mids, notable deterioration of the Tappan Zee Bridge was recorded, after which an extensive repair program was commenced. Targeted repairs were undertaken through the mids, including repairs to the concrete deck, steelwork, bearings, columns, and piles. Due to the high rate of deterioration, major rehabilitation of the deck bearings, barriers, steelwork, and concrete were again initiated in September The Tappan Zee Bridge is the longest bridge in the state and one of the longest in the country.
It has been determined eligible for NR listing under Criterion A for its significance in the area of transportation and Criterion C for its significance in the area of engineering. Character-defining features identified in the SHPO resource evaluation include the bridge's unique caisson support system, the length of its cantilever span, and the total bridge length. American Bridge was prime superstructure contractor for the 7,' 2,m deep-water portion of this 16,' 4,m crossing of the Hudson River above New York City.
The three-span channel unit is a 2,' m cantilevered truss that was constructed by erecting the anchor flanking spans on falsework trusses and cantilevering the 1,' m mainspan from both directions.
The 20 deck truss approach spans were constructed at an on-land yard facility and floated into place. Each span was about ' long by 64' wide by 26' deep 76m by 20m by 8m , and weighed tons mt. With the increasing demands for commuter travel taxing the existing bridges and tunnels, the Port Authority of New York and New Jersey had plans in to construct a bridge across the Hudson near Dobbs Ferry, New York. The Port Authority promised its bondholders that it would not allow any other entity to construct a river crossing within its jurisdiction, which reached to a point one mile 1.
A May 10, , editorial in The New York Times suggested that a site in southern Dobbs Ferry or northern Hastings-on-Hudson, where the Hudson narrowed considerably from its three-mile 5 km width at Tappan Zee, would be a more appropriate site, and suggested that Governor Dewey work with his counterpart, Governor of New Jersey Alfred E. Driscoll, to craft a compromise that would offer Thruway customers a discounted bridge fare at a more southerly crossing.
Merit Award International Federation of Consulting Engineers. Grand Award Engineering Excellence Awards. American Council of Engineering Companies. Transportation Award: Best Special Solution PCI Design Awards.
Diamond Award Project of the Year Award Municipal Engineers of the City of New York. Tappan Zee Award Operations and Maintenance Award We'll notify you here with news about. Turn on desktop notifications for breaking stories about interest?
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The path will also have six scenic overlooks, and visitor parking, restrooms and other amenities at each landing. The Governor Mario M. Cuomo Bridge is built to last years before any major structural maintenance is required. Jamey Barbas, P. Barbas has more than 30 years of experience in bridge design, construction and inspection with a special emphasis on complex and long-span bridges. She is an expert in leading major infrastructure projects and in alternative delivery methods such as design-build.
This funding has also frozen tolls on the entire Thruway system through The remainder of the cost of the new bridge will be financed with Thruway Authority bonds. Governor Cuomo has frozen tolls at current levels through and has called on the Thruway Authority to establish a resident discount program for drivers living in Rockland and Westchester counties. Implemented for the Tappan Zee Bridge in April , cashless tolling allows motorists to pay their toll while maintaining highway speeds.
Cashless tolling helps ease congestion, improve safety and reduce air pollution. The system, which now serves the Governor Mario M. Cuomo Bridge, collects tolls via E-ZPass and Tolls by Mail, detecting classes of vehicles and applying the correct charge.
If you have E-ZPass, your toll is collected using the same process that you are already familiar with. A bill is then automatically sent to the registered owner by U. Learn more at NewNYBridge. The new bridge will have dedicated bus lanes in its final twin-span configuration. The new bridge is also being built with the structural capacity to handle rail in the future. Many concrete materials and steel trusses have been repurposed or recycled.
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