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BN - St. Louis Bay Double Swing Bridge

St. Louis County, Minnesota, and Douglas County, Wisconsin

Photos 

St. Louis Bay Bridge

Swing span removed

Photo taken by Douglas Butler in April 2013

Enlarge

BH Photo #286078

Map 

Street View 

Description 

Separated into "Minnesota Draw" (West Swing Span) and "Wisconsin Draw" (East Swing Span)

Facts 

Overview
Lost Pratt through truss swing bridges over St. Louis Bay on Burlington Northern
Location
Duluth, St. Louis County, Minnesota, and Douglas County, Wisconsin
Status
Removed
History
Built 1908, Removed 1986
Railroads
- Burlington Northern Railroad (BN)
- Northern Pacific Railway (NP)
- Soo Line Railroad (SOO)
Design
From Minnesota to Wisconsin
6 Spans Trestle
1-160' Pin Connected Pratt Through Truss
1-425' Pin Connected Through Truss Swing Span
1-15' I-Beam
----
Begin Double Track
----
132 Spans Trestle
1-479' Pin Connected Through Truss Swing Span
28 Spans Trestle
Dimensions
Length of largest span: 479.0 ft.
Total length: 3,342.0 ft. (0.6 mi.)
Also called
SOO - St. Louis Bay Bridge
Approximate latitude, longitude
+46.74598, -92.11041   (decimal degrees)
46°44'46" N, 92°06'37" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/567951/5177320 (zone/easting/northing)
Quadrangle map:
Superior
Inventory number
BH 59641 (Bridgehunter.com ID)

Categories 

Beam (16,243)
Built 1908 (770)
Built during 1900s (7,436)
Burlington Northern Railroad (487)
Double Swing (8)
Douglas County, Wisconsin (32)
Duluth, Minnesota (71)
Have street view (27,721)
Lost (26,398)
Lost 1986 (171)
Lost during 1980s (1,449)
Minnesota (1,618)
Movable (3,061)
Navigable waterway (2,178)
Northern Pacific Railway (447)
Owned by railroad (12,978)
 Pratt through truss (5,640)
Pratt truss (9,674)
Railroad (16,100)
Soo Line Railroad (307)
Span length 250-500 feet (1,216)
St. Louis County, Minnesota (140)
St. Louis River (14)
State line crossing (877)
Steel stringer (6,493)
Superior, Wisconsin (8)
Swing (1,518)
Through truss (15,737)
Timber stringer (4,160)
Total length over 2500 feet (929)
Truss (33,898)
Wisconsin (1,576)

Update Log 

  • February 2, 2015: New Street View added by Luke
  • June 22, 2014: New photo from Douglas Butler
  • February 14, 2014: Updated by John Marvig: Added information
  • February 9, 2014: Updated by John Marvig: Added information
  • February 9, 2014: Added by Luke Harden

Sources 

  • Luke
  • John Marvig - marvigj27 [at] gmail [dot] com
  • Douglas Butler

Comments 

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