In a Bridge

Discussion in 'Nature Photography' started by Buffalobob, May 15, 2009.

  1. Buffalobob

    Buffalobob Writers Guild

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    Once a month we go around to a set of bridges and determine the amount of trash lodged on the upstream side.

    Here is what we found inside one of the bridges today.

    [​IMG]
     
  2. Slopeshunter

    Slopeshunter Well-Known Member

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    Great pic!

    tks
     

  3. geargrinder

    geargrinder Well-Known Member

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    Judging by the amount of efflorescence and other staining around that joint, corrosion of the reinforcement has or will start soon. Quickly followed by delamination, scaling, and general erosion of the concrete at that joint.


    Wait....was I supposed to be looking at the bird debris? I'd get the maintenance guys to remove so it wouldn't affect the bridge rating.

    Sorry, used to be a bridge inspector.
     
  4. lo86

    lo86 New Member

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    thank you .for your info, it's very useful....
     
  5. Buffalobob

    Buffalobob Writers Guild

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    This is a picture of the amount of trash that was accumulated at the bridge last August when we began the study. Each month we remove the trash and weigh and inventory it.

    [​IMG]

    This is how it looked this last month. Notice that it is pretty clean and also that there is a plume of turquoise water on the far right.

    [​IMG]

    This is the storm sewer that is discharging the turquoise water. We reported it to Maryland Dept of the Env. and will see if they actually earn their money and do something.

    [​IMG]
     
  6. jmason

    jmason Well-Known Member

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    That sucks! What's making the water that color?
     
  7. Buffalobob

    Buffalobob Writers Guild

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    I do not know what was causing it. There is a "Research" facility about a block away and I suspect it comes from them. You will notice that the plants at the outfall are not dead, and the algae in the concrete channel are not dead. There are some daces in the stream and they and the the crayfish were alive. This indicates that it is not highly toxic.

    In April there were two preschoolers playing in the water inside the bridge barefooted. Because of the amount of broken beer bottles and the flock of ducks and geese in the stream the kids are at high risk for several types of infections.
     
  8. geargrinder

    geargrinder Well-Known Member

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    It could be an algae itself.

    Last year when diesel prices rose so high many people found that algae contained large amounts of oil that could simply be pressed out of it to be turned into biodiesel.

    This could be the solid waste from a similar process.

    Most of the algae's used were not harmful to humans or animals, in fact many of the commercial biodiesel producers sold the solid waste as a very nutritious animal feed.

    Not saying that's what it is, just what it could be. Maybe that's what they are "researching".
     
  9. Buffalobob

    Buffalobob Writers Guild

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    This is the response I got from Prince Georges County

     
  10. jmason

    jmason Well-Known Member

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    I guess your gonna have to quit dumping green die in the water:rolleyes: