Archive for the ‘main span towers’ Tag

Concrete Pours continue on Soon-to-Open Span

Remember these? They’re deck panels at the Westchester landing months earlier. The same way kids’ toys interlock, these hairpin reinforcing steel bars connect deck panels to each other. Reinforcing concrete will be poured between the spaces (around the steel) prior to the final driving surface. Photo courtesy of the New York State Thruway Authority.

Enlarged photo of Westchester landing, where crews are pouring cement closures after deck panels were installed /Kevin Coughlin/Office of Governor Andrew M. Cuomo

The other day someone asked me why the Tappan Zee Bridge couldn’t be used as a bridge park. One look at the section below from the same photo will answer his question.

People ask why the Tappan Zee Bridge cannot become a bridge park. The reason: no way to connect it to land /Kevin Coughlin/Office of Governor Andrew M. Cuomo

You can see that the new westbound span and in-progress eastbound span are connected to the Westchester landing, and the piers of the Tappan Zee Bridge are hanging out in the river. How would people access the bridge park if there’s no connection to land?

Westchester and Rockland have plenty of beautiful riverside parks to enjoy. I disagreed with the idea for a bridge park, namely for safety and lack of feasibility. There’s a way to enjoy the river view from the new bridge when the side path opens in 2019.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Deck Panel Installation Continues on New Span

Crews continue to set precast concrete deck panels atop the steel girders, install rebar, pour concrete and ready the driving surface of the eastbound span. This is what the westbound span looked like before its final driving surface was applied. Deck panels were interlocked via their hairpin reinforcing steel bars; the spaces between them were closed with reinforcing concrete.

They’re doing other work, too, including removing sections of the Tappan Zee Bridge. Their order is the section south of the center, a cantilever truss weighing 4,560 tons; strand jacks will then help lower the main span section closest to Westchester, an anchor span weighing 5,350 tons, onto barges. Then comes the section south of the center, followed by the section closest to Rockland.

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 2018 issue of Westchester Family.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Flashback Friday: First Construction 66 Years Ago

then

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.

now

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

Bridge Lights captured against Darkened Sky

Like candles glowing in the night, belying the freezing cold temperatures, the new bridge’s main span towers were alight in blue as its piers below supporting structural steel, road deck and traffic changed rhythmically from blue to red and back, seen in this video by Flying Films NY co-founder and pilot Vinny Garrison.

“I have been in business for four years, back when drones were only things that flew around and shot missiles at people,” Garrison said. “I have enjoyed filming the construction of the new bridge and deconstruction of the old bridge and look forward to having an all-inclusive video from start to finish.”

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2017

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