MnDOT does have some sort of re-use program in place, but only for a finite, pre-selected group. Most of these bridges are more notable and "rare" (they're ALL extremely rare now!); they seem to have considered these Warrens "common" and not worth salvaging; I don't know of any from up there that have been re-used. It's sad to see them all being wiped out; there were tons of these bridges when I was a kid; now there are none :'(
It's just sad that rehabilitation doesn't seem to be given higher priority in many of these cases where the ADT count is so low.
Don't get me wrong I'm all for public safety, but are these new structures significantly cheaper than at least sustaining repairs on the historic ones?
Joe, and/or Matt... Does Minnesota promote dismantling and storing any of these trusses for possible future trail or park reuse?
I agree; it's certainly not an historic truss, but it beats Jersey barriers any day of the week! St. Louis County has been using this bridge type on county roads for several decades now; presumably to fit in a little bit better with their "rustic" atmosphere. They use Jersey and steel barriers on state and federal highways though.
Most of these old trusses are on the local system, so it is up to the individual county or township to decide what happens to them. I am not aware of any official re-use program, although I have heard that a couple have been purchased and moved to a private location.