The the story of the Mackinaw road bridge in Michigan narrated by the late great Lowell Thomas, dramatic scenes of men working at heights to erect the suspension wires on this massive bridge and the men building the 'side-walk in the sky'!
In: Science and Technology
Tags: Straits of Mackinaw, Michigan, suspension bridge, working at height, Lowell Thomas,
Location: Michigan, United States (load item map)
Marked as: approved
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