As far as I can determine, there are four structures at the Upper St. Anthony Falls Power Plant that I would consider to be bridges. This includes a vehicle bridge across the channel leading to the power house, a walkway across the powerhouse outlet, a very short bridge leading to Hennepin Island, and a new bridge leading to Water Power Park on Hennepin island. None of these bridges cross the main channel of the the Mississippi River.

Bridge #1 is located in a spot where it is not possible to photograph without doing some serious and risky trespassing. The photo below, shot through a chain-link fence, shows the sidewalk and handrailing leading to a bridge that crosses the powerhouse intake canal. The walkway starts in the center of the photo, and heads to the right.

The photo above illustrates the problem in photographing bridge #1. The bridge is behind the doors that would block the water flow through the intake canal. All other views of the bridge are from restricted areas.

The photo below shows the walkway bridge (bridge #2) just in front of the power house spanning the outlet and spillway. The Hennepin Island power station is home to five hydropower generators.

The photo above is of bridge #3. It carries the outflow water from the St. Anthony Falls Laboratory and acts as an overflow valve for the powerplant intake. The lab is managed by the University of Minnesota, and is used to model flows of water, liquids, and gasses. The water flowing out of the outflow channel falls about 30 feet down to river level. It is such a nice waterfall, yet it is hardly known despite being in the heart of the city.

The photo below is a different view of bridge #3, again, taken through a chain link fence. The waterfall drops off to the right.

Above is bridge #4, a new bridge that was just installed in late 2006. It crosses the power plant intake canal. It connects Main Street with Water Power Park, a park that sits on Hennepin Island in the middle of the river. This park was built by Xcel Energy, the former Northern States Power Company. They were required to submit a recreational use plan for the power plant area as part of the license process for the hydropower station. They came up with a fantastic plan to open this formerly off-limits area to the public. NSP states that their will be two overlooks to the main falls, one that is spectacular, and another that is even better. The parked opened in June of 2007.

The photo below is another view of bridge #4 taken from Main Street. The mills on the Minneapolis side of the river are in the background. These mills have been rebuilt into office space, condos, and museums. There has been no milling done in Minneapolis for many years.

Above is an aerial photo of the St. Anthony side of the upper falls. The left side of the photo shows the power plant area, while the right side shows Father Hennepin Park. The locations of the four powerplant area bridges are noted.