The photograph above is the ex-Milwaukee Road route through Chamberlain, South Dakota, that is now owned by the state and operated by short line Dakota Southern. This is how it looks on the west side of town as the line heads for the Missouri River and the majestic bridge that carries the line over it.
These rails do not look passable, do they?
Believe it or not, some intrepid speeder (aka track inspection) owners took a ride on this line recently as documented in this You Tube video. The only worrisome thing about the rails I saw was that a few seemed to be trying to get out of gauge on the line on the east side of the wide Missouri.
However, this line is slated for upgrading and further use. Speeders will not be the only thing you see on this line in the near future!