It does sound ridiculous. Let me get this straight... I can drive machinery, quads, horses, etc over the bank, and across the water, and create all kinds of erosion, but I can't cross the creek via a low impact bridge? Bureaucrats suck.
actually your NOT legally allowed to drive thru flowing water, so, NO you cannot just drive thru it, over making a bridge, or at least not in my home state of PA, and a few others I know of
that again is why I suggested logging as a reference, they pay HUGE amounts of money to gain ability to drive across even small creeks, and many times its NOT worth the trouble or costs to do so for them, leaving standing timber on the other side!
yes many folks just drive thru, but its NOT legal
I have farmer friends that have crop fields on other side of small 2+ ft deep streams and they legally can ONLY cross "X" many times a yr without needing special permits(AKA< cost money) and its ONLY due to the crop fields were there before laws were passed,
and deal here in PA< as far I I know, is any FULL time bridge(not temp bridge)
must legally be able to hold the largest firetruck in the area, or something silly like that, so a bridge can get SUPER costly to be legal here
not to mention, you have to have an engineer design it, get the designs approved by correct dept, then get permits, and have a full plan in effect at start up and finish dates
were living in a crazy time, where its all about the $$$
I am sure some can just DO IT and get away with it, but once someone files a complaint, it can get crazy!