Technically, this is not yet another swing bridge. It's a bobtail bridge. That means it is not symmetric. That is, one side is longer than the other. All though the differences in the length of the sides of this bridge are pretty small. I might have missed that it was a bobtail bridge if it wasn't for the conspicuous counterweight at the end of the short side. This bridge is also noteworthy because we seldom have a set of photos that include the interior of the control house as well as the machinery room.
Richard A Jeffery posted eleven photos with the comment: "I found a few pictures I had taken of Bridge 15. Located on the Mississippi River in St Paul MN. Bridge is known as the Omaha Bridge to the RR crews. Bridge was built in 1915."
If you look closely you can see the steam crane on a barge used during during construction
In the bridge house
The controls that cause the bridge to move
Entrance to the mechanical room under the tracks.
Notice the high water mark from 1965
A video of the span swinging open as viewed from a boat