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Every bridge in Brown County, South Dakota

Name: Every bridge in Brown County, South Dakota
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

170 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Brown County, South Dakota, has 170 bridges in the 2025 National Bridge Inventory: 55 rated good, 95 fair, and 20 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
US012 over Moccasin Ck	1954	21,635	Poor
Second Street over Burlington Northern RR	2003	11,055	Fair
Second Street over First Ave NW	2003	11,055	Fair
Second Street over Railroad Ave SW	2003	11,055	Fair
3RD Avenue SE over Moccasin Creek	2019	5,087	Good
US281 over BNSF Railroad	2001	4,468	Fair
US281 over Foot Ck	1971	3,968	Fair
Roosevelt Street N over Moccasin Creek	1995	3,845	Fair
Melgaard Road over Moccasin Ck	1990	3,600	Good
US012 over Antelope Ck	1972	3,468	Fair
US012 over Ck	1972	3,468	Fair
US012 E over Foot Ck	1970	3,252	Fair
US012 W over Foot Ck	1970	3,252	Fair
US281 over Elm Rv	1959	3,041	Poor
US012 E over BNSF RR	2005	2,878	Fair
US012 E over James Rv	1994	2,878	Fair
US012 W over Burlington Northern RR	1975	2,878	Fair
US012 W over James Rv	1975	2,878	Fair
US012 over Snake Ck	1970	2,736	Fair
10TH Avenue SE over Moccasin Creek	1974	2,069	Poor
US281 over Maple Rv	2015	2,022	Good
US281 N over Moccasin Ck	1972	1,726	Fair
US281 N over Moccasin Ck	1971	1,726	Fair
US281 S over Moccasin Ck	1972	1,726	Fair
US281 S over Moccasin Ck	1972	1,726	Fair
134TH Street over Creek	1930	1,400	Poor
383RD Avenue over Foot Creek	1990	1,128	Good
SD037 over Antelope Ck	1953	993	Fair
SD037 over Mud Ck	1953	993	Fair
135TH Street over Moccasin Creek	1977	900	Fair
SD037 over Ck	1953	851	Fair
SD037 over Ck	1955	851	Fair
SD037 over Crow Ck Ditch	1961	836	Fair
410TH Avenue over Creek	2001	825	Good
387TH Avenue over Foot Creek	2009	775	Good
387TH Avenue over Moccasin Creek	2009	775	Fair
SD010 over Dry Run Creek	2020	732	Good
SD010 over Elm Rv	2020	732	Good
391ST Avenue over Elm River	1968	570	Fair
8TH Avenue SE over Moccasin Creek	1976	500	Poor
SD010 over James Rv	1948	494	Fair
104TH Street over James River	2016	456	Good
148TH Street over Mansfield Slough	2006	455	Good
148TH Street over Snake Creek	1956	420	Fair
142ND Street over Mud Creek	2017	411	Good
130TH Street over Creek	2006	402	Good
130TH Street over Creek	2009	399	Good
142ND Street over Moccasin Creek	1951	384	Fair
127TH Street over James River	2010	313	Good
142ND Street over James River	2009	303	Fair
127TH Street over Crow Creek Ditch	2014	283	Fair
382ND Avenue over Richmond Lake Spillway	1999	283	Good
Main Street over Maple River	1981	267	Fair
142ND Street over Moccasin Creek	2001	255	Fair
396TH Avenue over James River	1957	252	Poor
107TH Street over Maple River	1997	250	Good
107TH Street over Dry Branch Creek	2013	249	Fair
395TH Avenue over James River	1964	244	Fair
412TH Avenue over Creek	1930	235	Fair
410TH Avenue over Crow Creek Ditch	1950	234	Fair
395TH Avenue over Moccasin Creek	2008	214	Fair
123RD Street over Elm River	2019	210	Good
126TH Street over Richmond Lake	2001	199	Fair
393RD Avenue over Elm River	1996	158	Good
104TH Street over Maple River	2013	150	Good
391ST Avenue over Moccasin Creek	1958	141	Fair
119TH Street over Crow Creek Ditch	1957	125	Fair
396TH Avenue over James River	1999	105	Fair
100TH Street over James River	1971	100	Good
396TH Avenue over Elm River	2014	100	Good
101ST Street over Maple River	2007	98	Fair
102ND Street over Maple River	1992	98	Good
103RD Street over James River	1900	98	Poor
103RD Street over Maple River	2007	98	Fair
104TH Street over James River	1940	98	Fair
111TH Street over Elm River	2000	98	Good
111TH Street over Elm River	1988	98	Fair
112TH Street over Willow Creek	2006	98	Fair
114TH Street over Crow Creek Ditch	2012	98	Fair
114TH Street over Elm River	1981	98	Fair
114TH Street over Willow Creek	1940	98	Fair
120TH Street over Elm River	1974	98	Fair
122ND Street over Crow Creek Ditch	2012	98	Good
122ND Street over Elm River	2010	98	Good
125TH Street over James River	1920	98	Poor
129TH Street over Foot Creek	2019	98	Good
130TH Street over Foot Creek	1976	98	Fair
131ST Street over Foot Creek	2004	98	Good
132ND Street over Creek	1984	98	Fair
133RD Street over Creek	1935	98	Poor
133RD Street over Creek	1935	98	Poor
134TH Street over Creek	1930	98	Fair
134TH Street over Creek	1930	98	Fair
134TH Street over Creek	1932	98	Fair
134TH Street over Foot Creek	1965	98	Fair
135TH Street over Foot Creek	1977	98	Poor
138TH Street over Snake Creek	1993	98	Good
139TH Street over Moccasin Creek	1983	98	Fair
139TH Street over Mud Creek	1990	98	Fair
140TH Street over Mud Creek	1990	98	Fair
140TH Street over Mud Creek	2021	98	Good
141ST Street over Moccasin Creek	1983	98	Fair
141ST Street over Mud Creek	2010	98	Fair
143RD Street over Mud Creek	1935	98	Poor
144TH Street over James River	1989	98	Fair
144TH Street over Moccasin Creek	1989	98	Fair
144TH Street over Snake Creek	2007	98	Fair
145TH Street over Creek	2015	98	Good
146TH Street over James River	1970	98	Fair
146TH Street over Mud Creek	1989	98	Good
146TH Street over Snake Creek	2004	98	Fair
147TH Street over Creek	2015	98	Good
147TH Street over Snake Creek	1990	98	Fair
373RD Avenue over Snake Creek	1929	98	Poor
375TH Avenue over Willow Creek	1968	98	Poor
378TH Avenue over Richmond Lake	2019	98	Good
383RD Avenue over Creek	1930	98	Poor
384TH Avenue over Elm River	1970	98	Fair
384TH Avenue over Foot Creek	1995	98	Good
384TH Avenue over Mud Creek	2002	98	Fair
387TH Avenue over Elm River	1998	98	Good
387TH Avenue over Maple River	2023	98	Good
387TH Avenue over Moccasin Creek	2010	98	Good
388TH Avenue over Moccasin Creek	2007	98	Fair
389TH Avenue over Moccasin Creek	2020	98	Good
393RD Avenue over Moccasin Creek	2021	98	Good
395TH Avenue over Elm River	1987	98	Fair
397TH Avenue over Mud Creek	1930	98	Poor
398TH Avenue over Mud Creek	1915	98	Poor
404TH Avenue over Creek	2003	98	Fair
405TH Avenue over Creek	1935	98	Poor
405TH Avenue over Mud Creek	1991	98	Fair
406TH Avenue over Creek	2015	98	Good
407TH Avenue over Creek	2015	98	Fair
407TH Avenue over Creek	2019	98	Good
407TH Avenue over Mud Creek	2023	98	Good
409TH Avenue over Crow Creek Ditch	2016	98	Good
411TH Avenue over Creek	1925	98	Fair
411TH Avenue over Mud Creek	1938	98	Fair
408TH Avenue over Crow Creek Ditch	1935	97	Fair
107TH Street over Elm River	2015	77	Good
382ND Avenue over Elm River	1991	77	Fair
113TH Street over Elm River	2012	70	Fair
132ND Street over Foot Creek	2003	70	Fair
137TH Street over James River	1967	67	Fair
377TH Avenue over Willow Creek	1950	66	Fair
110TH Street over Maple River	1986	61	Fair
133RD Street over Foot Creek	2002	60	Good
138TH Street over Mud Creek	2012	56	Good
400TH Avenue over James River	1978	54	Fair
400TH Avenue over James River	2014	54	Fair
135TH Street over Snake Creek	2006	50	Good
394TH Street over Moccasin Creek	2000	50	Good
Milwaukee Ave SE over Moccasin Creek	1986	50	Good
400TH Avenue over Mud Creek	1956	46	Fair
118TH Street over Elm River	1988	44	Good
117TH Street over Sand Lake	1971	41	Fair
410TH Avenue over Mud Creek	2002	40	Good
409TH Avenue over Creek	2015	37	Good
116TH Street over Willow Creek	1999	35	Good
123RD Street over Foot Creek	1932	35	Poor
102ND Street over Elm Lake	1935	33	Poor
109TH Street over Elm River	1925	27	Fair
141ST Street over Snake Creek	1986	27	Fair
114TH Street over Willow Creek	1940	18	Fair
140TH Street over Moccasin Creek	1983	15	Fair
138TH Street over Mud Creek	1983	12	Fair
116TH Street over Elm River	2006	10	Good
139TH Street over Mud Creek	2002	10	Good
126TH Street over Foot Creek	2007	5	Fair

Source: FHWA National Bridge Inventory, 2025.

Brown County bridge conditions · South Dakota bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.