WOW J.R.! I am impressed!.....Not only a bridge enthusiast, but also skilled in linguistics. You never cease to amaze!
No, there was never anything under this bridge other than Lincoln Creek. It is located just south of the intersection of Teutonia and Villard Avenue. The bridge you are referring to on this site is a through-truss that carries the UPRR. http://bridgehunter.com/wi/milwaukee/bh38478/
About a mile and half to the north of this bridge, near the intersection of Teutonia and Mill Road (approximately 43.13232, -87.95246) there is a steel and concrete slab that carries Teutonia across the active UPRR line and a bunch of other, um, stuff. At one time, there were a pair of wooden trestles that crossed these tracks, they were a pair of rickity old wooden viaducts that carried Teutonia over the tracks. Trust me, you have to be over 50 to remember a ride over those heart-pounding spans. They were always referred to as "viaducts" so it just seemed natural to call the replacement, modern UCEB, a viaduct.
Incidentally, the street name is pronounced "Tie-TONE-ee-ya" for those of you who don't live in the area and aren't familiar with the local vernacular. Another exampi is "Burleigh" which is pronounced "Burr-lie." Yeah, I know, but then, what else could you expect from a city where North Avenue is south of Center Street?
on another bridge somebody said something about a abandoned railroad track under this bridge that may connect to another bridge is this true?