Small creek bridge abutment design?

[Rockbadchild]

Well,
Spent some time with a wetlands expert.
I did soil samples - No wet lands soil types,, No water 18" down, and vegetation is not wetlands.
Some am I good to go ??
NOPE,, even though it is not wet lands I would have to do extensive "studies" totaling about $50,000.00 before being "allowed" to build a permanent bridge.

It kills me to see hundreds of you tube videos of guys building tractor bridges across creeks in "Free" states.

what about a temporary bridge like your previous idea and what would be the consequences to forget it in place for lets say a summer ?