Builders of Bridges (Replaces the copy removed by YT)
This is a 1928 one-reel B&W silent. These were shown before the feature presentation along with other shorts like cartoons, comedies, newsreels, and novelty shorts. About ten minutes of workers high in the air setting steel and rivets on this bridge. Some great footage of construction methods for large spans. Filler in the last three minutes showing mountain scenes with time lapse clouds.
Prelinger Archive at archive.org--Public Domain