Loco on a flat bed truck

About noon today I saw a steam loco going east down the highway on the bed of a truck. I was going west on Interstate 70 in St. Clairsville, Ohio (just west of Wheeling, West Virginia).
From a distance it looked like a big tank. Then as I got closer it looked like an industrial/stationary boiler. Then, just as we were about to pass each other at about 65 miles per hour each (combined, that's 130 MPH!!) I realized it was a steam locomotive! It was a 2-8-0, with wheels, frame, and boiler. No cab or tender. I did not have much time to look at the details. It looked standard gauge, but I am not on a standard gauge discussion group, so I thought I would try you guys.
It looked like a locomotive I once saw at Dodge City, Kansas, on the Dodge City, Ford & Bucklin RR. (a tourist line). I think that loco had been in the Black Hills, but saw regular service in Arkansas.
Anyway, anybody know what I might have seen headed east towards Pennsylvania (or points east)? Standard gauge, or narrow gauge?
Tom Armstrong