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  1. #1
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    Log over bridge?

    I've got a project going and I need some Pictures of log over bridges. in a nut shell I have four foot dia. log and I want to build a bridge at an angle up and over with the log being exposed on top. anyone have a shot of this?

  2. #2
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    I've recently completed one, and have another partially completed. I'll take pics this afternoon and post tonight.

  3. #3
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    I know it's not quite what you have in mind, but hopefully you can get some ideas.


  4. #4
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    Thanks for the replies, I'm needing some pics to show a group what I have in mind.

  5. #5
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    I just saw something like that over here:

    http://www.morcmtb.org/photopost/sho...e=9999&way=asc
    Attached Images Attached Images
    Michael Vitti
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  6. #6
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    Ohhhh NOW i know what you're talking about.

    i've built these. Build a wooden bridge to normal spec. To tie into the log you can nail/screw a header/support board into the log. You could also chop into the log, so you can tie your stringers right into the log.

    That's the beauty of wood, you shape/chop to what you want to do.
    .~...|\
    ...~.|.\
    ..~..|..\
    .~...|...\
    ~....|....\
    ...~.|.....\
    ....~|____\
    _____||_________
    .\....FAILBOAT..../

  7. #7
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    Was going to take a pic of ours, but the rain kept me away from the trails. Here's a drawing showing what we did. Using a chainsaw, we notched out 4 spots on the log (2 on each side) so that they would accept a 4x4 piece of treated lumber. We position the 4x4 beams, then topped them off with treated 2x4 slats. If you cut your notches carefully so that the 4x4's fit snuggly, the ramps should stay in place with just a couple of nails to keep them from slipping out of the notches as they settle.
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  9. #9
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    Or you could do it this way:

    Less intrusive then dimensional lumber. We have the benefit of copious amounts of rock, so there are rock ramps clearing 3'-4' tall deadfalls on numerous trails around here.

  10. #10
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    Quote Originally Posted by mnwfrank
    Or you could do it this way:

    Less intrusive then dimensional lumber. We have the benefit of copious amounts of rock, so there are rock ramps clearing 3'-4' tall deadfalls on numerous trails around here.
    That's pretty cool! Good use of native materials. I prefer using what the good Lord gives us instead of importing something that doesn't look like it belongs there.
    Charles Myrick
    33North Adventures | Owner
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