This is one industrial strength bridge. Everything is massive, from the steel in the truss sections, the large counterweights, the massive towers, and the huge motor assemblies at the top of the towers. The bridge has to be strong to endure the pounding that it takes day in and day out. The lift bridge is operated frequently in the summer due to a high volume of recreational boaters on this section of the river.
Given the volume of trains, and the public parking right next to the tracks, this is a great place to go train watching. Just be careful to keep off of the tracks. A fast moving train that is throttled down can sneak up on you before you know what has hit you. Trains are speed limited to 25 miles per hour by the curve just before the bridge, but that is still moving fast for such a huge object. Most of the trains are large cross-country freight trains of 60 to 120 cars. You will see mixed freight trains, container cars, and coal unit trains in this area. I have seen trains cross this bridge as frequently as once every 11 minutes, so you normally do not have to wait long to see railroad action up close and personal. If you cross the tracks, do not step on the rails. The rails are heavily used, and as a result, very slippery. If you slip, note that the other rail is about as far away as a person is tall, so there is a chance of hitting your head or neck on the other rail. If you get knocked out, you will be on the tracks when the next train arrives.
The BNSF lift bridge replaced an earlier swingspan built by the Chicago, Burlington, and Quincy Railroad. The CB&Q is one of the three large railroads that merged to form the Burlington Northern. The BN has since merged with the Santa Fe to become the BNSF.
The photo above and the photo below are views of the north face of the lift bridge as seen from the east shore of the Saint Croix River from two different vantage points.