Alpena County

North Branch Thunder Bay River Bridge   [Map]
Lost pony truss bridge over North Branch Thunder Bay River on Wikaryasz Road
No longer exists
Built 1921; replaced 2002
Second Avenue Bridge   [Map]
Bascule bridge over Thunder Bay River on Second Avenue in Alpena
Open to traffic
Built 1939; rehabilitated 1988
Werth Road-Mud Creek Bridge   [Map · Street View]
Concrete tee beam bridge over Mud Creek on Werth Road
Open to traffic
Built 1928