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Author Topic: How is bridge demolition done?  (Read 1165 times)

longhorn

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How is bridge demolition done?
« on: April 16, 2021, 02:11:25 PM »


Curious how did they get deck to pancake like that? Minor explosives on the supports? Yet traffic is flowing on the other side.
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bwana39

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Re: How is bridge demolition done?
« Reply #1 on: April 16, 2021, 05:24:52 PM »

My guess is the jackhammer on the boom of the excavator finally made the final cut to release the tension. 
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Let's build what we need as economically as possible.

The Ghostbuster

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Re: How is bridge demolition done?
« Reply #2 on: April 16, 2021, 09:39:30 PM »

I suppose using dynamite would be too dangerous and too messy.
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abqtraveler

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Re: How is bridge demolition done?
« Reply #3 on: April 17, 2021, 08:08:35 PM »

My guess is the jackhammer on the boom of the excavator finally made the final cut to release the tension.

Just weaken the support columns enough and the bridge will collapse under its own weight.
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2-d Interstates traveled:  4, 5, 8, 10, 15, 20, 24, 25, 27, 29, 35, 37, 39, 40, 41, 43, 45, 49, 55, 57, 64, 65, 66, 69, 70, 71, 74, 75, 76(E), 77, 78, 81, 83, 85, 87(N), 89, 90, 91, 93, 94, 95

2-d Interstates Clinched:  12, 22, 30, 44, 59, 80, 84(E), 86(E), 238, H1, H2, H3, H201

 


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