Bridges in Dewey County, South Dakota

27Total Bridges

15Good

8Fair

4Poor

Dewey County, South Dakota has 27 bridges tracked in the National Bridge Inventory. Of these, 4 (14%) are rated in poor condition and 15 are rated good. The oldest bridge in Dewey County is IRR State Park RD over Little Moreau Rv, built in 1950. The longest is IRR BIA RTE 7 over Moreau River at 418.0 feet.

Bridge	Condition	Length	Traffic	Year
IRR BIA RTE 2 over Red Water Creek	Poor	69.9 ft	180	1961
IRR BIA RTE 7 over Virgin Creek	Poor	148.0 ft	105	1961
Fas 6247 over Bear Creek	Poor	149.0 ft	103	1960
IRR BIA RTE 7 over No Mouth Creek	Poor	100.7 ft	70	1960
IRR Sd063 over Moreau Rv	Fair	394.0 ft	717	1971
IRR BIA RTE 3 over Hand Boy Creek	Fair	94.2 ft	200	1964
IRR BIA RTE 2 over Little Moreau Creek	Fair	80.1 ft	109	1960
IRR BIA RTE 7 over Moreau River	Fair	418.0 ft	105	1961
IRR BIA RTE 7 over Beaver Creek	Fair	93.8 ft	100	1960
IRR County Road over Creek	Fair	24.0 ft	55	1965
IRR County Road over Creek	Fair	20.3 ft	38	1960
IRR State Park RD over Little Moreau Rv	Fair	32.2 ft	5	1950
IRR Us212 over Little Bear Ck	Good	119.4 ft	1,291	2023
IRR Sd020 over Ck	Good	26.2 ft	890	1997
IRR Sd020 over Ck	Good	31.2 ft	890	1997
IRR Us212 over Virgin Ck	Good	119.1 ft	601	1990
IRR Us212 over Virgin Ck	Good	119.1 ft	601	1988
IRR Sd020 over Little Moreau Rv	Good	23.6 ft	598	1993
IRR BIA RTE 3 over Veo Creek	Good	76.1 ft	550	2016
IRR County Road over Creek	Good	87.9 ft	451	2020
IRR BIA RTE 3 over Moreau River	Good	200.1 ft	305	1987
IRR BIA RTE 4 over Green Grass Creek	Good	100.1 ft	195	2013
IRR BIA Route 8 over East Branch Willow Creek	Good	100.1 ft	160	2008
IRR BIA RTE 8 over Stove Creek	Good	172.6 ft	110	2013
BIA Highway 4 over Creek	Good	111.9 ft	90	2008
IRR BIA RTE 7 over Buffalo Skin Creek	Good	76.1 ft	77	2013
IRR County Road over Trib To Little Moreau R	Good	40.7 ft	10	2008

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