Port Huron, Michigan
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Black River Bascule Bridge (St. Clair County, Michigan)
Built 1933Bascule bridge over Black River on 7th Street Erie Street in Port HuronOpen to traffic
Blue Water Bridge (St. Clair County, Michigan)
Built 1938; rehabilitated 1999Through truss bridge over St. Clair River on Westbound I-94 in Port HuronOpen to traffic
Blue Water Bridge (St. Clair County, Michigan)
Built 1997Steel through arch bridge over St Clair River on I-94 EBOpen to traffic
CN - Black River Bridge (St. Clair County, Michigan)
Built 1929Pony/through plate girder bridge over Black River on Canadian National RailroadOpen to traffic
CN - St. Clair Tunnel (New) (St. Clair County, Michigan)
Built to replace old St.Clair Tunnel with improved clearancesTunnel under St.Clair River on Canadian National RwyOpen to traffic
CSX - Black River Bridge (St. Clair County, Michigan)
Built 1931Warren through truss with all verticals bridge over Black River on Pere Marquette Railroad (abandoned)Closed to all traffic; the yacht club that now owns the bridge proposed to demolish it as of December 2011; preservation group has offered to acquire lease it but club wants it moved off-site
Military Street Bascule Bridge (Old) (St. Clair County, Michigan)
Built 1912-13; Replaced 1991Lost Bascule Bridge over Black River on I-94/I-69 Business Loop (ex-US 25, ex-M-25) in Port HuronReplaced by new bridge
Military Street Bridge (Old) (St. Clair County, Michigan)
Built 1884; replaced 1914Lost Pratt through truss bridge over Black River on Military StreetDemolished and replaced
Military Street Bridge (Older) (St. Clair County, Michigan)
Built 1857; Replaced 1884Lost Howe through truss bridge over Black River on Military StreetReplaced by a new bridge
St. Clair Tunnel (St. Clair County, Michigan)
Built 1888-1891; Electrified 1907-1908; Electrification removed 1958: Tube sealed 1994Tunnel under St. Clair River on Canadian National Railroad in Port HuronClosed to all traffic
Tenth Street Swing Bridge (St. Clair County, Michigan)
Replaced 1957Lost Pratt through truss bridge over Black River on 10th StreetReplaced by a new bridge