One of the more unique things to see in Port Huron is the Pere Marquette Railroad Bridge. I think I've done pictures of it on here before because it satisfies two of my interests....bridges and trains. It would be really cool if ships went down the river and then I could hit a sort of tri-fecta but I don't think they do that anymore.
The railroad was established in 1900 after the merger of three railroads. It operated in most of Michigan. It remained in service until 1947 at which time it was merged into the C&O railroad.
The design is based on a counter weight which is used to raise and lower the bridge.