OP
cpy911
Bronze Member
- Joined
- Feb 22, 2020
- Messages
- 75
- Location
- Oregon City, OR
- Tractor
- John Deere 445, Craftsman GT 6000, Yanmar YM186D
Makes sense now. Thanks.
Makes sense now. Thanks.
How is your pier attached to the underside of your beams?
Each pier is rebar pinned to the horizontal pole it’s under.How is your pier attached to the underside of your beams?
Yep. I'd also worry about debris lodging against the center support.I like doorman63's suggestion of utility poles. They'll support a lot of weight, and will likely outlast you before they rot, unlike the fir.
As far as center support (should you go that route), how big is the stream at its highest? A strong current or high level is going to put a lot of stress on those supports unless they're well anchored.
I just deal with the debris.Yep. I'd also worry about debris lodging against the center support.
Your bridge frame is about the specs of my beams (smaller beam is 5" on one end and 7" on the other, similar to a 4x6). Free span will be about 12'.Have two simple bridges, both based on two 4x6x12 foot timbers with 2x6 inch cross decking... Actual free span is about 10 feet.... It supports a 520 pound riding mower and 200 pound operator just fine.... Think I would go bigger with main timbers before trying to cross with 1400 pound tractor though....
I have looked at the trailer route, and may do another bridge based around a trailer, but people around here want a mint for their junk. Part of the west coast extra cost tax I guess.Since you've already got your stringers, this may not help, but around here (VT) there are a lot of skidoo bridges built with old trailer frames or mobile home frames. Cheap, rot resistant and strong