Iosco County

Au Gres River Bridge   [Map]
Lost Pony/through plate girder bridge over Au Gres River on M-65 (formerly U.S. 23, formerly M-10)
Replaced by a new bridge
Au Sable River Bridge   [Map · Street View]
Pony truss bridge over Au Sable River on Old M-65
Built 1931; bypassed 2003
Route 23 Bridge   [Map · Street View]
Lost Concrete deck girder bridge over Tawas River (near the mouth) on West Lake Street (RT. 23)
Replaced by a new bridge
Built Unknown
U.S. 23 Au Sable Bridge (Old)   [Map]
Lost Pratt through truss bridge over Au Sable River on U.S. 23
Replaced by a new bridge