Originally Posted By: fish n chips
He has said-

Does the spacing of the beams match the track of the tractor? or is the wood decking taking the load? This is also dynamic loading as opposed to static which is a little more critical. NEED MORE INPUT!



the beams are wider than the tractor (4'-0" ctr to ctr. tires)
I am attaching a photo showing the dimensions of the beams and what i would like to do. What I have now is the 2x10 rough cut decking made out of hemlock (already cut and paid for). I do have a person to get rough cut lumber from but he does not have any larch anymore, just Hemlock and White pine.

Sorry about the delayed response but i don't get e-mails when i get a new post. I found this forum by doing a google search and looking around found a lot of good info, plus this summer we will be putting in a pond.
Attachments
RR bridge-Model.jpg