The Little Thompson River Bridge, in Weld County, Colorado near Berthoud, Colorado, was built in 1938. It was listed on the National Register of Historic Places in 2002.[1]
It was designed by the Colorado Department of Highways, fabricated by Midwest Steel & Iron Works, and installed by contractor Gardner Brothers. The highways department specified "a rigid-connected camelback pony truss, supported by reinforced concrete abutments with angled wingwalls."[2]
The bridge was altered by addition of flex beam guardrails around 1980.[2]
It is located on what is now a service road for Interstate 25, at milepost 249.90, near Berthoud. It is the eastern-most of three north–south bridges at the site; the other two carry southbound and northbound Interstate 25 traffic.[2]
In May 2021, there is ongoing construction at I-25's Little Thompson River crossing, covered in Colorado Department of Transportation photos.[3]
References
- ^ a b "National Register Information System". National Register of Historic Places. National Park Service. November 2, 2013.
- ^ a b c Colorado Historical Society's Office of Archaeology and Historic Preservation; Clay Fraser (May 21, 2002). "National Register of Historic Places Inventory/Nomination: Little Thompson River Bridge / CDOT No. C-17-N; 5WL2985". National Park Service. Retrieved April 28, 2021. With accompanying two photos from 1999
- ^ Segment 6 - Little Thompson River Bridge Columns - May 2021 and Segment 6 - Little Thompson River Bridge Columns - May 2021
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