Lonny,
No worries about me doing 75mph with a trailer in the twin cites. I'll keep it at 73.... Actually I don't remember the last time I did 75 pulling my trailer, well maybe it was just a couple weeks ago when I was late getting to a Garden Tractor Pull. No, I was doing 80 that day...
Maybe I'll have room for you and your Cub on my trailer, notice I said you and your Cub ON my trailer - Just kidding! Using Charlie's advise, I do have rope and could tie you down to the trailer so you won't fall off.
For anyone else, there should be no problems with twin city traffic for getting to Plow Day. The 35W collapsed bridge is right near downtown Minneapolis, so anyone coming from the south won't even come within 15 miles of it, same for the north. Those coming from the east, will pass within a couple miles of the collapsed bridge site but it should have no effect on the traffic conditions. For me traveling into or through the twin cities is much easier than other big cities, such as Chicago, Los Angeles, etc.