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Historic Bridges: Ontonagon County, Michigan

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.
Total Bridges Found: 9

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M-28 Over Middle Branch Ontonagon River in Rural: Ontonagon County, Michigan, United States
Metal Two-Hinged Solid Ribbed Deck Arch, Fixed and Approach Spans: Concrete Slab, Fixed
Length: 193 ft. Main Span: 150 ft. Roadway: 32.2 ft. Main Spans: 1
Built 1930 By: Meads and Anderson and Michigan State Highway Department
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Railroad (Bergland to Sidnaw Rail Trail / Trail 8) Over Middle Branch Ontonagon River in Rural: Ontonagon County, Michigan, United States
Metal Deck Girder, Fixed
Built 1900 By: American Bridge Company of New York, New York
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Railroad (Bergland to Sidnaw Rail Trail / Trail 8) Over Baltimore River in Rural: Ontonagon County, Michigan, United States
Metal Deck Girder, Fixed
Length: 435 ft. Roadway: 8 ft. Main Spans: 13
Built 1899 By: Lassig Bridge and Iron Works of Chicago, Illinois
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M-26 Over West Branch Firesteel River in Rural: Ontonagon County, Michigan, United States
Metal Cantilever Deck Girder, Fixed
Length: 270 ft. Main Span: 102 ft. Roadway: 28 ft. Main Spans: 3
Built 1952 By: Unknown and Michigan State Highway Department
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M-38 Over West Branch Firesteel River in Rural: Ontonagon County, Michigan, United States
Metal Cantilever Deck Girder, Fixed
Length: 240 ft. Main Span: 90 ft. Roadway: 31 ft. Main Spans: 3
Built 1958 By: Jackson Construction Company and Michigan State Highway Department
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East Shore Road (Old Alignment) Over West Branch Ontonagon River in Rural: Ontonagon County, Michigan, United States
Metal 3 Panel Rivet-Connected Warren Pony Truss, Fixed
Main Spans: 1
Built By: Unknown
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Old M-26 Over West Branch Firesteel River in Rural: Ontonagon County, Michigan, United States
Concrete Closed Spandrel Deck Arch, Fixed
Length: 35 ft. Main Spans: 1
Built 1922 By: Unknown and Michigan State Highway Department
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Railroad (Escanaba and Lake Superior Railroad) Over Ontonagon River in Ontonagon: Ontonagon County, Michigan, United States
Metal 6 Panel Pin-Connected Pratt Full-Slope Pony Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed
Length: 470 ft. Main Span: 100 ft. Roadway: 15 ft. Main Spans: 2
Built 1899 By: Lassig Bridge and Iron Works of Chicago, Illinois
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US-45 Over East Branch Ontonagon River in Rural: Ontonagon County, Michigan, United States
Metal Continuous Deck Girder, Fixed
Length: 384 ft. Main Span: 144 ft. Roadway: 35 ft. Main Spans: 3
Built 1958 By: Jackson Construction Company and Michigan State Highway Department

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