Port Huron, Michigan
Military Street Bascule Bridge (St. Clair County, Michigan)Built 1012-13; Replaced 1991
Lost Bascule Bridge over Black River on I-94/I-69 Business Loop in Port Huron
Replaced by new bridge
St. Clair River Bridge (St. Clair County, Michigan)Built 1938; rehabilitated 1999
Through truss bridge over St. Clair River on Westbound I-94 in Port Huron
Open to traffic
St. Clair Tunnel (St. Clair County, Michigan)Built 1888-1891; Electrified 1907-1908; Electrification removed 1958: Tube sealed 1994
Tunnel under St. Clair River on Canadian National Railroad in Port Huron
Closed to all traffic