Tag: Footings

Aerial Bridge: Proposed Suspended Car Transfer Over Ship Canal at Duluth, Minnesota

This is a general elevation drawing, plus end view of both towers. The suspended car transfer is in the center of the bridge drawing over the canal. Dimensions are included for the distance from the water to the bottom of the bridge span (135 feet) and the footings. The drawing shows small stone and gravel fill near and around the concrete footings at the base of each tower. The finials are shown in detail. Lake Avenue is shown from one tower to the other. Drawing H-5421A, U.S. Patent February 1903. ~ Photo Credit: University of Minnesota Duluth, Kathryn A. Martin [...]

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