HistoricBridges.org Bridge Locator

Nearby Bridges: 4
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Rough Distance: 0 Miles (0 Kilometers)

Lake Avenue Over Duluth Ship Canal in Duluth: St. Louis County, Minnesota, United States

Metal 16 Panel Rivet-Connected Pennsylvania Through Truss, Movable: Vertical Lift and Approach Spans: Concrete T-Beam, Fixed

Length: 502 ft. Main Span: 386 ft. Roadway: 24 ft. Main Spans: 1

Built 1905 By: Unknown and Thomas McGilvray of Duluth, Minnesota, Claude Allen Porter Turner of Minneapolis, Minnesota, and Harrington, Howard, and Ash of Kansas City, Missouri

Converted to a lift bridge in 1930, this bridge retains the towers and overhead truss of the only transporter bridge in the United States.

Interstate Bridge (Approach Span)
HSR

Rough Distance: 1.8 Miles (2.9 Kilometers)

Pedestrian Walkway Over St. Louis River in Duluth: St. Louis County, Minnesota and Douglas County, Wisconsin, United States

Metal 10 Panel Pin-Connected Parker Through Truss, Fixed

Length: 845 ft. Main Span: 325 ft. Main Spans: 1

Built 1897 By: Pennsylvania Steel Company of Steelton, Pennsylvania and Alfred P. Boller of Philadelphia, Pennsylvania

Originally a large swing bridge over the river, today only one of the fixed approach truss spans remain today.

!
Blatnik Bridge
John A. Blatnik Bridge, High Bridge
HSR

Rough Distance: 1.9 Miles (3.1 Kilometers)

I-535 and US-53 Over St. Louis Bay in Duluth: St. Louis County, Minnesota and Douglas County, Wisconsin, United States

Metal Cantilever (Arch and Suspended Deck) 20 Panel Rivet-Connected Warren Through Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed

Length: 7,985 ft. Main Span: 600 ft. Roadway: 58 ft. Main Spans: 3

Built 1961 By: American Bridge Company of New York, New York and Howard, Needles, Tammen and Bergendorff of Kansas City, Missouri

This bridge is a rare example of a cantilever truss bridge that features a tied arch suspended span.

Grassy Point Bridge
HSR

Rough Distance: 4.4 Miles (7.2 Kilometers)

Railroad (BNSF) Over St. Louis River in Superior: Douglas County, Wisconsin and St. Louis County, Minnesota, United States

Metal Multiple-Type-Connected Baltimore Through Truss, Movable: Swing (Rim Bearing Center Pier) and Approach Spans: Metal Through Girder, Fixed

Length: 1,660 ft. Main Span: 430 ft. Main Spans: 1

Built 1912 By: American Bridge Company of New York, New York

This railroad bridge is noted for its very large swing span.

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S - Dismantled and/or in storage. L - Severe loss of historic integrity due to alteration.

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