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Upper Peninsula Regional Digitization Center

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  • All fields: sunk
(8 results)



Display: 20

    • Ship Collision

    • Soo Locks (Mich.) ; Boats and boating ; Shipwreaks
    • Photograph of the wreakage of the Pontiac sunk in a collsion with the Athabaska July 1891. The Pontiac, one of the biggest steel carriers on the lakes, was owned by the Cleveland Iron Mining Company's. The carrier is at the bottom of the Sault...
    • Cable bent  cofferdam

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • The first section of the south cable bent pier was fabricated in Toledo, OH and towed to the site where it was placed within a corral and sunk to bedrock like the other piers. The round objects are tubes (digging wells) used by clamshell bucket...
    • Backstay span

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • The backstay span, going from anchor pier to cable bent, was delivered to the site by barge, and moved into position. Once in proper location, the barge was partially sunk allowing the truss to settle down onto its fastenings.
    • Cable bent pier

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Pier 18, the south cable bent pier was fabricated in Toledo, Ohio and towed to the site. It was placed inside a corral and sunk by loading with aggregate and dredging through 21 dredging wells.
    • Equipment

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • The old lake freighter ""Wolverine"" was purchased by the foundation contractor from Columbia Transportation co and was used for storage of materials. It was sunk in Moran Bay and used for a breakwater over the winter of 1954-55. In the spring it...
    • Cable bent pier cofferdam

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • The cofferdams used for the cable bent piers, built at St Ignace, were 75 feet high and 50 feet in diameter. They were sunk to bedrock (65 feet for pier No. 21, the north cable bent pier) sheet piling was added and excavation was done within.

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