Yeah you may be right about that Darvish. I suppose my bridge will last a good long time, but at some point I will probably lose confidence to drive my tractor across it. Hopefully the fasteners don't rot too quickly, and then it will be straightforward to disassemble and rebuild - assuming my footers/abutments hold up.
Had a major flood test last friday night. Just posted another thread about having to
repair my gravel driveway, which has never washed out from rainfall before (6+ years now). I think we got between 5 and 6 inches of rain, with most coming in a very intense 3 hour period.
The next morning before starting on my driveway repair, the kids and I took a hike back to inspect the creek. I knew I would need to wear my waders. Came over the hill and this is how the trails looked in the forest:
Looking at the mud-stained leaves of the weeds and bushes on the trail sides, I could see that the water had already come down about a foot! But the bridge survived, thank goodness.
If you look closely you can see foam remnants on the bottom side of the phone pole - they were clearly getting washed hard with flood water. The front/upstream cinder block got washed pretty hard also. I think I will need to place some armoring in front of it for future protection.
My little temporary footbridge didn't fare as well, and it blew down the stream a bit. Time to yank it out already.
This was the most intense rain, and highest creek flooding I have ever seen on this piece of land, in over 8 years of observation now. I'm feeling truly relieved and grateful that nothing really got damaged. Mother nature is a powerful force.