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Bridge collapse

Discussion in 'Safety Issues' started by oakland, Oct 28, 2008.

  1. oakland

    oakland COPPA

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    hello everybody,many of you may have seen the "bridge on stilts" picture in my concrete paving post. well today at about 2:15 concrete paving was taking place on top of the deck. and the structure supporting the bridge collapsed. 14 workers were injured but with non life threating injuries. no one was under the deck at the time but those who were on top rode the collapse down. THIS IS JUST A REMINDER PLEASE BE SAFE.
     

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  2. Tanstaafl

    Tanstaafl Active Member

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    Wow. Glad to hear that everyone is ok.

    Be interesting to see what the investigation says was the reason for the failure.
     
  3. Lashlander

    Lashlander Senior Member

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    I'm wondering why its on stilts in the first place.
     
  4. insleyboy

    insleyboy Well-Known Member

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    Yikees, what a fall that had to be! A hundred thousand dollar Bid-Well machine is junk as well! Glad to here all are going to be OK. I survived a fall like that years ago.....Scary!!!
     
  5. oakland

    oakland COPPA

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    they said its a faster way of building the bridge.they dont have to close lanes they just build it off to the side of the old bridge. i dont understand why its so high its 30 feet exact. :beatsme
     
  6. OneWelder

    OneWelder Senior Member

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    Were they going to reroute road to new bridge or build new brige on site then move into place?
     
  7. oakland

    oakland COPPA

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    they were going to move the bridge into place, but now there about 2 months behind schedule:(
     
  8. surfer-joe

    surfer-joe Senior Member

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    Is that on the 84 by Boise?
     
  9. oakland

    oakland COPPA

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    yep, they still dont know wha caused it:beatsme
     
  10. Squizzy246B

    Squizzy246B Administrator

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    Gravity??
     
  11. Lashlander

    Lashlander Senior Member

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    Thats some nasty stuff. Its caused me many a problem.
     
  12. Turbo21835

    Turbo21835 Senior Member

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    Its real nasty stuff when you mix it with a lack of sobriety from time to time
     
  13. Tanstaafl

    Tanstaafl Active Member

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    I'd bet it's for Utah's Rapid Bridge Replacement program.

    FHWA Article on Rapid Replacement

    Obviously the falsework gave away, but I'm wondering on whether or not the falsework had a stamp on it or if they just calculated the dead load, tossed a safety factor in and went for it.
     
  14. cat 385

    cat 385 Senior Member

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    no problems like that in utah it's has gone pretty good as far as i know.
     
  15. oakland

    oakland COPPA

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    yeah its a rapid bridge replacement only not in utah ;) this is the first time they have done this in the valley and as far as i know no other issues have happened. work is at a standstill there afraid the collapse may have knocked the other 3 bridges out of alignment.:pointhead
     
  16. surfer-joe

    surfer-joe Senior Member

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    Here is what is known at this time. It's going to be a while before the OSHA and other investigations are completed and a root cause is determined. I passed by this work several times this year and it's an impressive piece of roadwork. However, it's a hell of a bottle neck during rush hour and even at other times. I don't believe I've been there without an accident having happened. It will be a hardship on all the workers for lost wages while the entire project is shut down.
    =========================================================
    "NAMPA — The Idaho Transportation Department hired two forensic investigation firms to look into what caused a partially constructed bridge to collapse Monday in Nampa, injuring 13 workers.

    The 14-man crew fell about 30 feet as they poured concrete on a bridge span they were building on a site away from the bridge’s ultimate location.

    Initial reports indicated all 14 crew members had been injured, but officials said Tuesday one worker declined treatment and was not taken to a hospital. The other 13 were taken to three area hospitals for treatment of injuries including broken bones and lacerations.

    Here’s what happened

    The 14 workers were pouring concrete using a cement truck and a crane.
    They had worked with a smoothing machine on the concrete and had about three-quarters of the bridge slab poured. It was the first of the four slabs where workers planned to pour concrete to build the bridge deck.

    The span of Robinson Boulevard bridge that fell collapsed about 1:30 p.m.
    The impact of the collapse may have compromised the strength of the scaffolding holding up the other Robinson Boulevard overpass span and the two spans for the Black Cat overpass — as well as the spans themselves.

    How much of the collapsed bridge span can be salvaged or if the other bridge spans can still be used has yet to be determined.

    The bridges were being built off-site so they could later be moved into place without disturbing traffic or construction on I-84.

    All work on the project, including construction of the other Robinson Boulevard span and the two Black Cat spans, has been halted.

    No work was taking place on the other three slabs at the site at the time of the accident.

    Officials believe the injured workers had worker’s compensation insurance coverage.

    Two of the 13 workers injured in the accident remained in an area hospital Tuesday. One of them has a broken back, Nampa Deputy Fire Chief Doug Strosnider said.

    The accident happened in a field just north and west of Interstate 84 and Robinson Boulevard. Crews were constructing interstate overpasses for Robinson and Black Cat Road in the field."
     
  17. oakland

    oakland COPPA

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    yes that will suck big time for the employees, but that is not completley accurate. last night the support columns were installed in the middle of the interstate. and they are working at blackcat as well as the approach to the robinson overpass.