2 votes

Oliver Swing Bridge


Oblique View

The Oliver Swing Bridge is an unusual two-level swing bridge. The lower level is State Highway 105, the upper level is the Burlington Northern & Santa Fe Railway. This bridge allowed navigation on the St. Louis River as far as New Duluth, MN

Photo taken by Robert Thompson

BH Photo #148064


Street View 


Double-decker swing bridge over St. Louis River on WI 105 and CN Railway
Oliver, Douglas County, Wisconsin, and St. Louis County, Minnesota
Open to traffic
Built 1910
- American Bridge Co. of New York
- Canadian National Railway (CN)
- Duluth, Missabe & Iron Range Railway (DMIR)
- Duluth, Missabe & Northern Railroad (DMN)
- Interstate Transfer Railroad Company (ITRC)
Swing Warren deck truss
Length of largest span: 149.9 ft.
Total length: 1,904.9 ft.
Deck width: 22.6 ft.
Also called
CN - Oliver Swing Bridge
Approximate latitude, longitude
+46.65673, -92.20155   (decimal degrees)
46°39'24" N, 92°12'06" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/561089/5167328 (zone/easting/northing)
Quadrangle map:
West Duluth
Average daily traffic (as of 2010)
Inventory number
BH 43533 (Bridgehunter.com ID)
Inspection report (as of August 2012)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Very Good (8 out of 9)
Sufficiency rating: 39.9 (out of 100)
View more at BridgeReports.com

Update Log 

  • May 30, 2020: New photo from Geoff Hubbs
  • November 19, 2019: Updated by Luke: Corrected build date & added builder
  • November 19, 2019: New photos from Matthew Johnson
  • December 9, 2014: New photo from Douglas Butler
  • February 21, 2014: Updated by John Marvig: Added category "Interstate Transfer Railroad Company"
  • February 8, 2014: Updated by Luke Harden: Corrected railroad
  • August 22, 2013: New photo from Douglas Butler
  • August 27, 2012: Updated by Luke Harden: Removed category "rail-and-road"
  • August 10, 2012: Updated by John Marvig: Added category "railroad"
  • April 14, 2010: Updated by Robert Thompson: Added link to Wiki article
  • October 24, 2009: Added by J.R. Manning



Oliver Swing Bridge
Posted December 26, 2015, by William Kearns (wkearns [at] columbus [dot] rr [dot] com)

In the 1950's my grandmother lived in Superior, WI, and I had an aunt, uncle, and cousin in Duluth. Occasionally we'd go over this bridge. it had a wooden deck and large steel columns came vertically thru the roadway holding up the RR tracks overhead. The last time I was in the area (about 1995), I was amazed to see this bridge still there and in use.