
December 5, 1931: Newspaper announces Duluth’s Aerial Lift Bridge will become “experimental station”
On this day in Duluth in 1931, the Duluth News-Tribune announced that Duluth’s Aerial Lift Bridge would become “the nation’s experimental station during the shipping season of 1931 when city commissioners will seek development of a system to warn bridge tenders of approaching ships in a storm or fog.” Various companies were invited to experiment…
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