https://peertube.dngr.us/videos/watch/f5df43d6-0359-4b24-a03c-9077e5be2312 Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Want to learn more about Periscope Film and get access to exclusive swag? Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com This 1958 USS promotional film "Mackinac Bridge Diary", was produced by the American Bridge Division, looks at the construction of the Mackinac Bridge, which was completed in 1957 and was the longest steel suspension bridge in the world at the time. It starts with a brief history of the need to connect the Upper Peninsula with the rest of Michigan and the long time it took to cross the strait by ferry. It covers the construction process in detail focusing on the placement of piers, the assembly of different steel pieces, and the laying of the suspension wires to ensure that the bridge stands. It also features detailed aerial, road, and water based shots of the completed bridge. 00:00 American Bridge Division, USS Presents, 0:18 “Mackinac Bridge Diary” 1958, 0:26 soldiers in the Toledo War, 0:49 map showing the territorial exchanges between Michigan and Ohio, 1:22 a copper mine on the Upper Peninsula of Michigan, 1:39 aerial overview of different mines, 2:22 aerial overviews of Mackinac Island, 2:39 the Tahquamenon Falls, 3:11 a map of the straits of Mackinac, 3:42 newspaper article showing the first time the building of a bridge across the strait was mentioned, 4:32 a map showing a bridge plan over different islands in the strait, 5:15 a map showing the ferry operations between Mackinaw City and St. Ignace, 5:55 a proposed double span suspension bridge across the strait, 6:30 the Michigan State Senate Building, 6:48 Dr. David B. Steinman in his office, 7:25 the Mackinac Bridge construction plans, 8:04 diagram showing where piers need to be constructed, 8:34 engineers working on tower elements in the water, 8:56 engineers putting a bracing for the construction of Pier 17, 9:26 removal of mud and water to allow for concrete pouring, 10:14 the body of the pier begins to emerge, 10:38 construction work on the tower pier pieces, 10:51 pieces being assembled in Michigan, 11:27 large steel casings being sunk in water and filled with concrete for the tower pieces, 11:58 base plates being placed on top of the structure, 12:20 start of construction of the steel elements of the tower structure, 13:18 view of the almost completed towers, 14:00 the backstage spans being maneuvered into position and pinned into place, 14:31 aerial overview showing ice in the strait, 15:03 steel for the bridge being produced and loaded, 15:41 steel cables being suspended between the different elements of the bridge, 16:42 tramway systems to move wires in place on the bridge, 17:51 an animation showing how wires were strung together to create strong cables, 18:11 engineers laying wires along the bridge structure, 19:02 hydraulic jacks squeezing the cables, 20:00 engineers installing suspender ropes, 20:30 roadway sections being floated to the bridge site, 20:44 roadway sections being installed on the bridge, 21:56 engineers loosely bolting together roadway sections to not endanger the structural integrity of the bridge, 22:31 diagram showing how sections automatically come into alignment as new sections are added, 22:39 engineers fastening aligned sections together, 23:06 different views of the construction progress on the bridge, 23:27 aerial overview of road paving on the bridge, 23:55 engineers installing the steel plates to support the roadway, 24:40 road being paved across the bridge, 25:02 the bridge wires being coated, 25:20 cars waiting to go on a ferry, 25:45 aerial overview of the completed bridge, 26:05 view from a car driving over the bridge,26:19 different shots of the bridge as seen from a boat, 26:55 aerial views of the bridge, 27:28 the bridge as seen from land, 27:42 a Jam Handy Picture, 27:46 Construction Photography by Herman D. Ellis, 27:53 American Bridge Division of United States Steel Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=D-6GJl3Nw3g Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Thu, 11 Jun 2026 05:08:39 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/f5df43d6-0359-4b24-a03c-9077e5be2312 All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.