TZB Demolition & Removal Proceed as Planned

Now that the eastbound ride is closer to what remains of the Tappan Zee Bridge, how many of you are looking to see where one of the members slipped in one of the joints?

I am. Maybe others can find it on the east anchor span; maybe it’s not visible from the road due to its location above the support columns near the western opening.

The Thruway Authority said the demolition process will proceed as planned and will not be expedited. 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.

“Engineers try to prepare for all contingencies and generally have a series of demolition stages where they examine and prepare for the different loading conditions at each stage,” Andrew Herrmann, partner emeritus of consulting engineers, Hardesty & Hanover, explained.

During demolition, when removing members of the bridge, loads in remaining members change and have to be checked to make sure no component is overloaded.

The eastbound span of the new bridge is and always was safe. Happy viewing!

I’d like to know what you think.

Copyright © Janie Rosman and Kaleidoscope Eyes 2018

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