1870: (no Archived Bridge Hunter; Bridge Hunter)
1906: (Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)
One of the abutments still uses cut stone. It appears that the other abutment was replaced with concrete, but they kept the stone wing walls.
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| 2014 photo by John Marvig via BridgeHunter_1906 |
This bridge is another transition design between pin connected and riveted plates.
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| 2015 photo by John Marvig via BridgeHunter_1906 |
Aaron De Baiso posted eight photos with the comment: "Absolutely pleasant weather graced Carlton County in Minnesota during the final weekend of May 2026. This provided an opportune occasion to photograph the former Northern Pacific train bridge over the St. Louis River just below Thomson Dam. This structure was constructed in 1906 by the American Bridge Company from New York. It is located between Thomson Township and Carlton along the Willard Munger Trail. Many hikers, runners, cyclists, and children were observed marveling at the bridge plus the opulent St. Louis River below. The smell of rust added to the historical splendor of being in the company of this century old reminder of the Northern Pacific. I am curious to know whether this bridge is along the Duluth Short Line Railroad Route. Can somebody help me with this, please? All photographs are from Saturday, May 30th, 2026."
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| 1953/64 Duluth Quad @ 250,000 |
I used the above map to try to sort out which BN was NP. Unfortunately, it is not accurate. But there is only one BN crossing the river, so that made it easy to find.
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| 1969/71 Cloquet Quad @ 24,000 |
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