Archive for the ‘Hudson River’ Tag

Crews remove Center of Tappan Zee Main Span

Kevin P. Coughlin/Office of Governor Andrew M. Cuomo

Seven months after the final set of tires crossed the Tappan Zee Bridge, crews began removing the first of five sections from the cantilever truss structure’s 2,415-foot main span.

The process of dismantling and placing its 532-foot-long center span onto a barge began Monday evening. While boaters were advised the main span channel would be closed for 48 hours to accommodate the operation, the precise time for completion had not been determined at press time.

Eight hydraulic strand jacks lowered the 4,750-ton suspended center span onto a barge to be transported offsite for further disassembly. Two moveable barrier machines, no longer needed, and 133 deck panels removed at an earlier time will be sent to nearly 12 state and local municipalities.

Last November, Tappan Zee Constructors, LLC (TZC) and the I Lift NY super crane began the year-long process of dismantling the old bridge by removing sections of steel.

“This new bridge is a vital economic link for Rockland and the entire Hudson Valley,” Rockland County Executive Ed Day commented. “I look forward to the full opening of this modern crossing that has been long awaited by our residents.”

Westchester County Executive George Latimer called the new bridge “a symbol of innovation and technology. The Tappan Zee Bridge served our County well, but transportation needs have changed since it was constructed, and it is time for it to be taken down.

Kevin P. Coughlin/Office of Governor Andrew M. Cuomo

Both counties will benefit from the Lower Hudson Transit Link system that begins November 2018 and replaces Rockland County’s Tappan Zee Express buses.

During the coming months, crews will remove two main span sections via barge-based cranes. Strand jacks will assist with lowering the two anchor spans, after which the super crane will help remove the main span’s steel support structures, completing main span removal by late fall 2018.

“New York is leading the nation in rebuilding and reimagining our infrastructure so we can meet the demands of the fast-paced, 21st century economy,” Governor Andrew Cuomo said.

This milestone in the project’s development follows the opening of the new TZ’s westbound span August 26, 2017. Eastbound traffic shifted to that span six weeks later. The final set of commuter rubber met the Tappan Zee Bridge’s road deck at 10 p.m. October 6, 2017, when Nyack resident Seth Kestenbaum drove his restored 1929 Ford Model A across the span prior to its retirement.

Four lanes each of opposite-direction traffic on the westbound span will continue until the eastbound span opens later this year, when each span will each have eight general traffic lane — four breakdown and emergency lanes and dedicated bus lanes — in addition to space for commuter rail when funds become available and a bicycle and walking path.

“Infrastructure investments such as this are invaluable components of a vibrant state economy, and none are more important to our region than this new, more resilient and stronger crossing,” Tarrytown Mayor Drew Fixell noted.

Main span of Tappan Zee Bridge minus center section/EarthCam® construction camera

“The construction of this new bridge will provide safe and more efficient travel for residents and visitors for generations, and I thank the Governor for recognizing the need to take action to replace the Tappan Zee,” South Nyack Mayor Bonnie Christian commented.

Design-build construction championed by the governor incentivizes the private sector to be creative on methods that speed up construction time and reduce costs and is used across New York’s large infrastructure projects, including the new Kosciuszko Bridge in New York City.

“The new bridge marks another step toward transforming New York’s infrastructure, reducing congestion for motorists and generating immense economic benefits for local communities, “ Thruway Authority Acting Executive Director Matthew J. Driscoll commented.

“(It’s) a great example of the state’s commitment to future generations of New Yorkers,” New NY Bridge Project Director Jamey Barbas agreed.

My article originally appeared in the Rockland County Times May 10, 2018.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Crews begin removing Tappan Zee Main Span

This greeted the rising sun this morning. While the Tappan Zee Bridge’s consistent disappearance may not have bothered some, dismantling the main span meant the bridge-park idea was not going to become reality.

I don’t understand why the idea wasn’t stopped in its tracks because the old and new bridges occupy the same footprint and connection to the Thruway. How was that supposed to work?

Details about the main span dismantling in this week’s Rockland County Times.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Final Steel Assembly & Removing TZB Roadway

Last week (April 12), the super crane placed the final steel girder assembly on the eastbound span. Crews continue placing additional small, unattached girders near Rockland so the span will connect to land.

The I Lift NY has been installing the blue steel assemblies since June 2015. I was there and saw the massive crane lift the first blue steel assembly from the barge that brought it downriver. Very exciting!

Photos are courtesy of the New York State Thruway Authority. Above, a mobile crane removes pieces of the Tappan Zee Bridge’s roadway. As the super crane ceased work on the new bridge, it will remove sections of the TZB’s large steel truss during the coming week; they’ll be placed on barges and eventually recycled.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

LHV Engineering Expo: 15th Annual STEM Event

As the bridge project met and hit timeline markers, your intrepid reporter met one of her own: last Sunday I attended the Lower Hudson Valley Engineering Expo at White Plains High School. Yes, my then four-and-one-half week new hip and I.

The first photo includes a black strand sticking up from the cross-section of stay cable. The photo above shows the top of that section with wires bundled into it.

Everyone wanted to see how heavy the section of 18-gauge galvanized rebar was compared to the residential rebar. I wonder if anyone tried to pick up the section of cement.

There were oyster shells — I put two up to my ear and thought I heard a whoosh although not like the ocean — and furry friends like this fish to show the project was protecting life below the bridge.

Weather not withstanding as spring is hiding somewhere, the day of companies, experiments, college and universities, learning and contests was a success. It was reigning STEM. You’re smiling if you understand the reference, and please pardon the pun if you don’t.

Watch for story about kids’ fascination with —  and how they’re learning about — STEM topics and activities in the May issue of Westchester Family.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

ICYMI: Where Educational Outreach Began

The photo above is the new westbound span and soon-to-be-finished eastbound span with the Tappan Zee Bridge behind them. Five years ago this summer, ideas of people in the photo below sparked the bridge project’s five-year educational outreach program. Photos are courtesy of the New York State Thruway Authority.

Learn more at the Lower Hudson Valley Engineering Expo next Sunday, April 15.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

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