Tractor over trail Bridge?

[ktm250rider]

Problem with wood is it will rot. Ive been building crossings with rocks by creating a natural culvert. If you access to a pipe, id use that and line both sides with rocks to keep the wild look.

 

[ovrszd]

Problem with wood is it will rot. Ive been building crossings with rocks by creating a natural culvert. If you access to a pipe, id use that and line both sides with rocks to keep the wild look.

I agree. There's a lot more to building a bridge than the bridge itself. You gotta set it on something solid. Dirt banks don't count.

 

[fried1765]

I built a 20' long bridge last year. I've crossed it several times with my 7K lb Super Duty. I haven't had my 11K Kubota on it. Yet.

I used steel I-beams. Sorry I can't help you with your wood beam construction. Something about that just unnerves me.



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More than a few 200 year old ALL WOOD covered bridges throughout the Northeast, STILL in everyday use.

 

[fried1765]

More than a few ALL WOOD covered bridges throughout New England, STILL in everyday use.

That Ford looks mighty purdy sitting on your bridge!

 

[KennyG]

OK, I think I have completed your project. I built a bridge to span about 10 feet and it handles my 2320 with plenty of margin. Check it out.

http://www.tractorbynet.com/forums/projects/289644-my-bridge.html?highlight=bridge

 

[fried1765]

OK, I think I have completed your project. I built a bridge to span about 10 feet and it handles my 2320 with plenty of margin. Check it out.

http://www.tractorbynet.com/forums/projects/289644-my-bridge.html?highlight=bridge

You did an EXCELLENT job on your bridge !!!!

 

[ovrszd]

More than a few 200 year old ALL WOOD covered bridges throughout the Northeast, STILL in everyday use.

No doubt. Just wouldn't be my goal for material.

I actually think as small as this crossing is I'd do a culvert or low water crossing.

 

[4570Man]

If you’ve got a salvage yard close by you can probably get some steel beams for a comparable cost of wood beams. Seaton enterprise is my steel source and it’s 25 cents a pound which includes nearly anything else you’re likely to find.

 

[MotorSeven]

All you need to do is find a beat up 20' equipment type trailer or a truck bed. They can be had for much less than buying steel and building it. If there is any danger of abutment wash out, I would use those concrete 'pigs' that most concrete company's sell, they are 2'x2'x6' long and here they are $50 ea. So dig down a bit, lay some gravel if needed, then two pigs end to end on each side of the creek. Then winch the trailer bed across & set it on the pig abutments, then remove the tires or axles.....done.

I did one out of a 20' steel truck bed, and we just had a nice flood(as usual during winter) and the bridge stayed high and dry). I'll snap some pictures late today for you.

Hey OVRSZD....excellent job or your bridge:thumbsup:

 

[rd_macgregor]

In your (OP) case, I think I'd go with a culvert, unless the location experiences pretty extreme flow events.
I have an aging wooden bridge that needs to be replaced (if mushrooms growing out of the decking and support beams is any indication). My first choice was a flat-deck shipping container, but they are pretty rare...I'm now thinking of having a local trailer fabricator price out a heavy trailer deck (without tongue, springs, axles, wiring, etc.) as an alternative.