Archive for the ‘girders’ Tag

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

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

Westchester Landing Removal & Lane Closures

And away it goes! Sections of Thruway near the Westchester landing say goodbye to the land this week, when crews begin removing them to make way for new precast concrete slabs. Click here for information about lane closures this week.

This is how the Thruway will connect to the land . . . and another reason the floating Tappan Zee Bridge-park was not a good idea.

Back to the picture above. Wouldn’t it make a pretty desktop wallpaper for your laptop or computer? Do you recognize the pattern?

It’s a tiny area of the more than 100,000 tons of welded (structural steel) beams supporting the roadway. Photo courtesy of the New York State Thruway Authority.

Oh, and remember the article I mentioned earlier about infrastructure, the new bridge and federal spending? You can read it here.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Eastbound Span Increases as TZB Decreases

This photo showing the angle we see from the other side (while heading west) is straight from the project’s newest tower webcam via EarthCam® construction cameras. If you click the photo, then you can see the I Lift NY setting structural steel near the Westchester shoreline.

Been a while since I posted: while I was away getting a new hip joint, the super crane’s been busy! Last weekend it was installing deck panels on the eastbound span so that you and your vehicle will have a safe ride. President Barack Obama and Governor Andrew Cuomo both talked about holes in the Tappan Zee Bridge’s roadway.

“At times you can see the river through the cracks of the pavement,” Obama said during his May 2014 visit to Tarrytown. “Now, I’m not an engineer, but I figure that’s not good.”

“They keep doing these patch jobs on the Tappan Zee Bridge, including those very heavy metal plates over holes in the Tappan Zee Bridge,” Cuomo said during remarks to the North America Building Trades Union’s Legislative Conference in April 2016.

“And when you go over the heavy metal plates, you see the truck in front of you bounces just a little bit, and then you see a little light coming through from the corner of the plate,” he said. “I would always take my seat belt off when I was going over the Tappan Zee Bridge. I was getting ready to swim, I would take off my shoes, and I would open the window. I was ready.”

In the above photo, courtesy of the New York State Thruway Authority, cranes are installing said deck panels. They’ll be interlocked via their hairpin reinforcing steel bars, after which reinforcing concrete will be poured between the spaces (around the steel) prior to the final driving surface.

Enough excitement for now. Check back later for another blog post. Self-promo: my article about infrastructure, the new bridge and federal spending will go live next month in a national magazine.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Girders and Concrete make News this Week

Here’s a close-up of one of section of the approximately 50,000 tons of structural steel on the 196,416-inch long bridge’s approach spans. Above is the Westchester side.

They’re huge. HUGE.

Imagine seeing one of the six barges that accidentally came loose after last week’s storm and floated down the river to a town or village, maybe near you.

This week, crews will be installing them on the eastbound Rockland approach span using mobile cranes. The I Lift NY super crane gets to sit on the sidelines for this job.

Lots of concrete pours in the works, too, for the eastbound span’s abutment in Rockland and for the new state police facility in Tarrytown. Work continues on the Thruway Authority’s new maintenance facility.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2016

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