I was not able to find a builder plate on the bridge, so I do not know who built this structure. It looks very similar to the prefabricated regional trail bridges that are built by Continental Bridge. The structure does double duty in that the truss not only supports the bridge, but the truss serves as the bridge railings. This bridge is holding up very well. It shows no signs of deterioration or wear despite being 30 years old when these photos were taken. The somewhat ugly chain link fence at each end of the structure protects pedestrians from falling down the steep drop to the wetlands located to the north of this structure.
The Excelsior Boulevard Bridge is slated to be replaced during the summer of 2010. Construction will start in June, with all lanes open by November 2010, and the project being completed in the summer of 2011. The new bridge will have sidewalks. As a result, this footbridge will become part of Minnehaha Creek history. Given that the bridge is still functional, it would not be surprising if it is reinstalled somewhere else, perhaps at another location over the Minnehaha Creek.
The photo above is looking northwest across Excelsior Boulevard towards the downstream face of the footbridge. There is no walkway on the south side of Excelsior Boulevard. The footbridge is the only pedestrian crossing over the creek at this location.