Duluth-Superior Transit Co.

Reporting mark: DST
Duluth Aerial Lift Bridge (St. Louis County, Minnesota)
Opened as a transporter bridge in 1905; reconstructed as a vertical-lift bridge in 1930; rehabilitated 1986, 1999, 2007, 2009
Vertical-lift through truss bridge over the Duluth Ship Canal on Lake Avenue in Duluth
Open to traffic

Interstate Bridge (St. Louis County, Minnesota)
Built 1897; Swing span struck and replaced 1906; replaced by Blatnik Bridge 1961, all but northern span removed 1970's
Parker through truss bridge over St. Louis River on Fishing pier (former railroad, US 53)
Open to pedestrians

Old Lester Park Bridge (St. Louis County, Minnesota)
Replaced 1971
Lost Warren pony truss bridge over Lester River on Superior Street
Replaced by a new bridge