Fromberg Concrete Arch Bridge

	Fromberg Concrete Arch Bridge
	U.S. National Register of Historic Places
	1980 HAER photo
Location	River Street over Clarks Fork Yellowstone River, Fromberg, Montana
Coordinates	45°23′30″N 108°53′42″W / 45.39167°N 108.89500°W
Area	less than one acre
Built	1914
Built by	Beley Construction Company
Architect	C. A. Gibson
Architectural style	Concrete arch bridge
MPS	Fromberg MPS
NRHP reference No.	92001790
Added to NRHP	January 28, 1993

The Fromberg Concrete Arch Bridge, in Fromberg, Montana, was built in 1914. It was listed on the National Register of Historic Places in 1993.^[1] It carries River Street over the Clarks Fork Yellowstone River.^[1]

It is a three-span concrete deck arch bridge designed by Carbon County, Montana, surveyor C. A. Gibson and was "quite advanced for the time": it has "flattened parabolic arches with a rise to span ratio of 1 to 7." At its completion it was the largest concrete bridge in the state.^[2]

In 1993 it was the oldest multi-arch concrete bridge surviving in the state.^[2]

References[edit]

^ ^a ^b ^c "National Register Information System". National Register of Historic Places. National Park Service. November 2, 2013.
^ ^a ^b Johnson, Lon (August 1992). "National Register of Historic Places Registration: Fromberg Concrete Arch Bridge". National Park Service. Retrieved September 8, 2019. With accompanying three photos from 1992 and one from c. 1914

External links[edit]

Historic American Engineering Record (HAER) No. MT-7, "Fromberg Bridge, Spanning Clarks Fork of Yellowstone River on East River Street, Fromberg, Carbon County, MT", 20 photos, 1 color transparency, 21 data pages, 3 photo caption pages

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[nris-1] "National Register Information System". National Register of Historic Places. National Park Service. November 2, 2013.

[nrhpdoc-2] Johnson, Lon (August 1992). "National Register of Historic Places Registration: Fromberg Concrete Arch Bridge". National Park Service. Retrieved September 8, 2019. With accompanying three photos from 1992 and one from c. 1914

[1]

[2]

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