Building the Mighty Mac
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29:32
Keweenaw Crossing: Michigan's Elevator Bridge
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26:28
Chesapeake Bay Bridge Tunnel 1964 construction in Virginia
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50:35
Golden Gate Bridge: The Structure that Defined an Era | FD Engineering
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45:29
Modern Marvels: The Railroads That Tamed the Wild West (S2, E9) | Full Episode
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55:16
Split Rock Lighthouse, The Superior Light - Full Documentary
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26:53
Tracks Across The Sky - Pennsylvania's Kinzua Viaduct
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22:10
Addition to the West Antenna Tower. Sears Building, Chicago, Illinois. Sunday, June 4th 2000
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51:43