What is Kinzie Street railroad bridge?
{{Infobox bridge |bridge_name = Kinzie Street railroad bridge |image = KinzieStRRBrdg08.jpg |caption = Kinzie Street railroad bridge permanently locked in the raised position |alt = Photograph of the bridge lifted to an angle of about 60 degrees to the horizontal |official_name = Chicago & North Western Railway, Kinzie Street drawbridge |other_name = Carroll Avenue bridge |carries = |crosses = [[Chicago River]] |locale = [[Chicago]] |maint = |id = |owner = [[Union Pacific Railroad]] |design = [[bascule bridge]] |mainspan = {{convert|170|ft|m}}<ref name=HAER /> |length = {{convert|195.83|ft|m}}<ref name=HAER /> |width = {{convert|41.7|ft|m}}<ref name=HAER /> |height = |load = |clearance = |below = |traffic = |begin = December 1907 |complete = |open = September 19, 1908<ref name=HAER /> |closed = |heritage = [[List of Chicago Landmarks|Chicago Landmark]] |coordinates = {{coord|41|53|18.7|N|87|38|21|W|region:US_type:landmark|display=inline,title}} }} The [[Chicago and North Western Railway]]'s '''Kinzie Street railroad bridge''' (also known as the '''Carroll Avenue bridge''') is a [[bascule bridge]] across the north branch of the [[Chicago River]] in [[downtown Chicago]], Illinois. When it opened in 1908, it was the world's longest and heaviest bascule bridge.<ref name=HAER>{{cite web |last=Spivey |first=Justin M |publisher= The Library of Congress |url=http://memory.loc.gov/cgi-bin/query/r?ammem/hh:@field(DOCID+@lit(IL0821)) |title=Chicago & Northwestern Railway, Kinzie Street Bridge |accessdate=February 19, 2008 |work=Historic American Engineering Record }}</ref> The ''[[Chicago Sun-Times]]'' was the last railroad customer to the east of the bridge. They moved their [[printing]] plant out of downtown Chicago in 2000. The bridge has been unused since then. It was designated a [[List of Chicago Landmarks|Chicago Landmark]] in 2007. ==References== {{refl