This structure was the Great Northern Mainlines crossing of 4th Street. Immediately after crossing this bridge, the GN would transfer to the Chicago, Burlington & Quincy.
The bridge was built in 1902, and later encased in concrete as a fire retardant method.
The bridge sits on stone abutments, and appears to be in fair condition. It is one of only a few concrete encased spans around the Twin Cities region.
It is also believed that all six of the tracks on the bridge were built for Great Northern.
The bridge also had an additional structure which angled off of the north side at one point. This was removed during a consolidation period between 1970 and 1980.
The author has ranked the bridge as locally significant, because of the build date.
The photo above is an overview.