Archive for the ‘structural steel’ Tag

Final Steel Truss Section of TZB is Now Gone

A tugboat with a steel truss section of what was once the Tappan Zee Bridge/NYSTA

Another steel truss section of the bridge we will miss went bye-bye last week. The above photo shows the final section that was once underneath the roadway we used to drive on.

Although the trusses are barged elsewhere, one section of the old bridge’s steel cage can be recognized south of the new bridge. Crews are disassembling the 10-million pound, 532-foot section in the river.

While the super crane was dispatched to the Bronx to help Amtrak, it’s still on the project and will continue to help crews dismantle the Tappan Zee Bridge so the new bridge’s eastbound span, now one solid piece from Rockland to Westchester, can finally be finished.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Last Steel Girder Installed on Eastbound Span

Rare sight was a cargo barge heading north on the Hudson River/© Janie Rosman 2018

Let’s hear it for the cargo ship that passed our boat heading north less than half an hour after we left Haverstraw Marina. We heard these ships were seldom seen. Our luck to see one that day!

The 11-mile trip to the bridges was eventful and fun; however, things got going as we rounded Hook Mountain, and the bridges were in sight. It was “the bridges” because — although a shell of its former self — the Tappan Zee Bridge is there. A section of its main span missing was missing as it was prior to completion in the photo below, courtesy of the New York State Thruway Authority.

Its proximity to the new bridge made it difficult to photograph it from the same distance; however, it was possible to capture the same angle looking north.

Same angle: close to its end instead of approaching opening day /© Janie Rosman 2018

For everyone who wanted to see the new bridge, there were many who wanted one last look at the Tappan Zee. Crews installed the last steel girder yesterday near Rockland, so now it’s possible to walk from one county to the other on the eastbound span. Photo below courtesy of the New York State Thruway Authority.

Barge-based cranes will next dismantle section two (south of the opening), a cantilever truss weighing 4,560 tons; strand jacks will then help lower section three (closest to Westchester), an anchor span weighing 5,350 tons, onto barges. Crews will then dismantle section four (next to the opening) and lower section five (closest to Rockland).

The timetable for removing the remaining sections is unknown; however, July 20 is the last Historical Society of Rockland County boat tour.. For information, visit https://www.rocklandhistory.org.

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

Sight Unseen: Activity Beyond the Car Windows

No fear of heights for whoever took the first two photos in this blog post or the above view of structural steel connecting the unfinished eastbound span to the Westchester landing. Photos courtesy of the New York State Thruway Authority.

After structural steel comes concrete deck panels. More than 6,000 precast ones, including those you and I drive on, have been placed so far.

You won’t see this from the road: the top view of a concrete barrier form that’s filled with steel rebar, which reinforces everything concrete on the new bridge.

Lots of progress on the Thruway Authority maintenance building, in final design. Maybe you missed this while driving by as we know your eyes were on the road.

The new barracks for state police is also shaping up on the Thruway’s south side.

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

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

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