Archive for the ‘Tappan Zee Bridge’ Category

Simultaneously Building and Dismantling

You might be planning to take it easy this weekend; however, the super crane will be working on the eastbound span near Westchester. Nearly two-and-one-half years ago, rews installed steel girders across the Metro-North tracks. The girders will connect the Westchester abutment to that span’s land piers Saturday night to Sunday morning.

Metro-North will suspend trains from 1 a.m. to 5 a.m. Sunday morning. Expect an extra 25-minute delay. For detailed MTA information, click here.

Don’t forget to move your clocks ahead one hour.

And then there’s the Tappan Zee Bridge or what remains of it per a southeastern view of its piers from Rockland. Photos courtesy of the New York State Thruway Authority.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Super Bowl 52: dad patiently explained the Game

Marty Glickman and dad

Here’s my dad with legendary sports broadcaster Marty Glickman at the old Shea Stadium. I love you, dad, and miss you so much. You patiently explained football to me, and by the end of the first quarter I’d forgotten what you said . . . not for lack of listening.

I paid attention to every word (like I did in science class yet couldn’t correlate the notes I took to the lesson plan) yet to me, the game was and always will be men in tights running away from or to each other to grab or throw the elusive football.

You’d grin at me when I told you, dad, and I knew you thought my comment was funny. I wished I understood the game as you did.

Hockey and basketball were and are my sports. That’s for another blog post.

Today is about football and fans rooting for their favorite team of men in tights running away from or to each other to grab or throw the elusive football.

This one-of-a-kind trophy was autographed by office staff, construction crews/NYSTA

No one will be throwing this football, dad, signed by the team that is building the new bridge. Maybe some of the men and women on this team wear tights (we used to call them woolies) for warmth since they’re outside in freezing weather yet have an ongoing team spirit.

I hope you enjoy the game from above, dad. Love, Janie

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Flashback Friday: First Construction 66 Years Ago


Your eyes are joining the two sections of the main span in the image above, right? History is repeating, now with two spans and a modern, hi-tech, safer and more artistic bridge.


Crews started work on the Tappan Zee Bridge in March 1952; this past summer the first span of its replacement opened. Happy and healthy New Year to you!

Photos courtesy New York State Thruway Authority.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

New York State Prepared to & Did Bridge a Gap*

One of my favorite photos from that day: two members of the construction team watch the crowds prior to the opening ceremony for the new bridge’s westbound span. It was a hot August day, and dad’s golf hat was my lucky charm.

Westbound traffic moved to that span the following night. The Tappan Zee was our eastbound ride for the next six weeks, and then — with slightly less fanfare than its earlier transition — eastbound traffic moved to the new span.

One driver’s wish came true: he was the last ride on the Tappan Zee Bridge, and we had a new eastbound ride. In early November, its first section was removed.

Less of the Tappan Zee now as sections of it are removed to be repurposed per a Thruway Authority board decision in July. Crews continue building the eastbound span and — near the Westchester landing — the new maintenance facility, new building for state police south of the Thruway and the walking and bicycle path.

With its main span towers and piers lit in lavender, the new bridge looked pretty against the oncoming late August night sky. I kept thinking, “Purple reigns on the Hudson Valley” (photo courtesy of New York State Thruway Authority) as I crossed the Tappan Zee Bridge westbound for the last time.

How many of you will remember 2017 as the year the Tappan Zee Bridge closed to traffic? Since last December, when the new bridge’s main span towers were completed, crews have been working toward its opening. The above-mentioned months stand out in my mind; your mileage may vary.

*Tag line for this blog is New York State Prepares to Bridge a Gap™

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2017

Inside Story of how TZC built the new TZ Bridge

Four years after its first foundational steel piles were driven into the river bed, one span of the new Governor Mario M. Cuomo Bridge connecting Westchester and Rockland counties in New York State opened to westbound traffic this past August.

Following a ribbon-cutting ceremony for the twin span, cable-stayed bridge named after his father, Governor Andrew M. Cuomo drove eastbound across the new span with Sleepy Hollow resident and Bronze Star recipient Armando “Chick” Galella in a 1955 Corvette, the same model year Corvette Galella drove with Governor W. Averell Harriman as part of the Tappan Zee Bridge’s December 15, 1955, inaugural procession.

This remarkable transition reflects the tireless efforts of thousands of men and women from Tappan Zee Constructors (TZC), a consortium of some of the world’s best-known and most highly-regarded design, engineering and construction firms.

In October, and weeks ahead of schedule, the Tappan Zee Bridge was retired, and eastbound traffic moved from that bridge to the new span. This allowed the design-build team to begin dismantling the old structure — including the steel and concrete above River Road in Rockland County — and to continue work on the eastbound span, which will open in 2018.

TZC’s first task involved removing the old bridge’s landings, which occupy the same footprint as the second span’s connections to the New York State Thruway. This was accomplished by cutting and dividing sections of steel and concrete into manageable sections, then using barge-based cranes to transport the materials away from the project site.

Transportation barges will carry the materials to ancillary facilities including the Port of Coeymans in Albany County. Many concrete materials and steel trusses will be recycled. More than 130 deck panels units, each approximately 13 feet wide by 50 feet long, will also be given to nearly a dozen state and local municipalities to be repurposed for other bridges and roadways.

Upcoming key operations include lowering of the old bridge’s main span steel cage via hydraulic jacks, and the removal of piles, piers and caissons with foundational material being removed below the bottom of the river. TZC will continue to remove pieces of the old bridge throughout the year, starting from the Rockland and Westchester landings and working toward the middle of the Hudson River.

Work on the new bridge’s eastbound span will continue throughout 2017 and into 2018. Once it opens to traffic, crews will begin building the new bicycle and pedestrian path on the westbound span. Features include six overlooks (resting points), visitor parking and pavilions; and interpretive exhibits, art and signage.

The Governor Mario M. Cuomo Bridge features an aesthetic lighting system that accentuates the iconic features of the new bridge, specifically its 419-foot towers, stay cables and concrete piers. TZC conducted numerous lighting tests throughout the year to help confirm the aiming angles of each lighting fixture, which needed to precisely follow the rendering plan set forth by lighting designers.

The project’s Visual Quality Panel, made up of the local community and design professionals, helped TZC develop the lighting plan. TZC prepared for these systems well in advance, installing parts of the utility and systems infrastructure into the steel girder assemblies that were fabricated offsite, reducing the amount of work required over the Hudson River.

Once the steel was safely secured atop the bridge’s concrete piers, TZC electricians began splicing and extending material, tying the bridge utilities into the systems in Rockland and Westchester counties. Utility lines provide electricity for the roadway and aesthetic lighting systems, and will also power the bridge’s structural health monitors, security systems and Intelligent Transportation Systems.

Much like the bridge’s roadway lighting, the aesthetic lighting utilizes energy-efficient light emitting diodes, or LEDs. The project’s LEDs are designed with 100,000-hour lifespans, using an estimated 75 percent less energy compared to traditional lighting technology.

TZC is utilizing modular construction techniques to create large sections of the bridge’s foundations, roadway and superstructure on-land. This allows TZC to safely prepare massive segments of the bridge off-site ahead of time, with some steel sections measuring up to 410 feet in length. Its ability to install these bridge elements is aided by the I Lift NY, whose enormous 328-foot lift arm can lift up to 1,900 tons of material — the equivalent of 12 Statues of Liberty at once.

This extraordinary lifting power, which shortened construction time by months from original estimates and reduce project costs by millions of dollars, will also help dismantle the old Tappan Zee Bridge.

Other innovative equipment includes: TZC’s mobile concrete batch plants that supply the majority of the structure’s concrete directly on the river, self-climbing jump forms that rose along with construction efforts to create the iconic main span towers, protective bubble curtains used to absorb the energy produced during pile driving; and the synchronized jacks used to lower football-field-length foundations into the Hudson River.

TZC is also constructing two buildings in Tarrytown: the Thruway Authority’s new maintenance facility and a new State Police facility. The buildings will improve bridge access for State Police and Thruway personnel responsible for maintenance, operations and security and will also allow emergency crews to quickly respond to vehicle breakdowns on the new bridge.

Crews created a new maintenance dock parallel to the new bridge in South Nyack. The dock will assist the Thruway Authority and emergency vessels near the new bridge.

Intelligent Transportation Systems will improve safety and mobility on the crossing by monitoring roadway conditions and notifying Thruway Authority staff of any disruptions. Motorists will also be informed of accidents and closed lanes through overhead electronic signage, enhancements that have been shown to minimize delays, allowing the public to get the most out of its investment.

The stream of data from the bridge’s sensors will be tracked at the Thruway Authority’s command center through an advanced Structural Health Monitoring System that will measure the twin-span crossing’s structural behavior under traffic and weather conditions. Routine and preventive maintenance work will also be efficiently scheduled with this state-of-the-art system. This vital communication network will make the bridge one of the most technologically advanced crossings in the United States when it opens in 2018.

Submitted by Tappan Zee Constructors, LLC (TZC) for the December 2017 issue of Rivertown Magazine. Photos courtesy of the New York State Thruway Authority.

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