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Every bridge in McCook County, South Dakota

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

98 inventoried bridges, busiest first

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

McCook County, South Dakota, has 98 bridges in the 2025 National Bridge Inventory: 44 rated good, 47 fair, and 7 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
I090 E over 453 Ave	1964	6,819	Good
I090 E over East Fork Vermillion Rv	2021	6,819	Good
I090 W over 453 Ave	1964	6,819	Good
I090 W over East Fork Vermillion Rv	2022	6,819	Good
I090 E over 448 Ave	1964	6,752	Good
I090 W over 448 Ave	1964	6,752	Good
I090 E over West Fork Vermillion Rv	2021	6,497	Good
I090 W over West Fork Vermillion Rv	2022	6,497	Good
I090 over Trib W Vermillion Rv	2021	6,085	Good
SD042 over East Fork Vermillion Rv	1984	2,794	Good
US081 over I090	1993	2,020	Good
US081 over West Fork Vermillion Rv	1982	1,973	Good
SD038 over East Fork Vermillion Rv	1947	1,768	Fair
SD042 over Ck	1998	1,614	Good
SD042 over Trib West Fork Verm Rv	1998	1,614	Good
SD042 over West Fork Vermillion Rv	1983	1,614	Good
US081 over Little Vermillion Rv	1947	1,268	Good
SD038 over Ck	1947	1,142	Good
SD038 over West Fork Vermillion Rv	2021	986	Good
431 Ave (fas 6341) over I090	1964	874	Fair
SD262 over Br Wolf Ck	1936	749	Fair
SD262 over East Br Wolf Ck	1936	749	Fair
SD262 over Wolf Ck	1937	749	Fair
451ST Avenue over East Vermillion Lake	1958	675	Fair
451 Ave (fas 6149) over I090	1964	592	Fair
451ST Avenue over Trib. to E Fork Verm Rv	1959	585	Good
SD038 Wf over Ck	1959	572	Fair
254TH Street over E. Fork of Vermillion Rv	1963	555	Fair
Valley Road over Trib. to E Fork Verm Rv	1957	400	Fair
SD042 over Wolf Ck	1957	361	Fair
445 Ave (fas 6355) over I090	1964	328	Poor
Valley Road over Trib. to E Fork Verm Rv	1956	252	Good
247TH Street over W. Fork of Vermillion Rv	2010	243	Good
261ST Street over W. Fork of Vermillion Rv	2003	230	Good
261ST Street over Wolf Creek	2012	225	Good
Valley Road over Trib. to E Fork Verm Rv	1957	215	Good
248TH Street over Little Vermillion River	2005	200	Good
431ST Avenue over Wolf Creek	1930	181	Fair
448TH Avenue over Little Vermillion River	1940	173	Poor
451ST Avenue over Trib. to E Fork Verm Rv	1984	160	Fair
252ND Street over W. Fork of Vermillion Rv	1925	157	Fair
257TH Street over W. Fork of Vermillion Rv	1925	155	Fair
252ND Street over Wolf Creek	1930	150	Fair
435 Ave (fas 6211) over I090	1964	148	Good
247TH Street over Wolf Creek	2001	145	Good
248TH Street over E. Fork of Vermillion Rv	2008	120	Good
261ST Street over Battle Creek	1970	110	Fair
431ST Avenue over Wolf Creek	2024	98	Good
245TH Street over E. Fork of Vermillion Rv	2020	85	Good
250TH Street over W. Fork of Vermillion Rv	2005	85	Good
245TH Street over Wolf Creek	1978	66	Fair
246TH Street over Trib. to Little Verm Rvr	1965	66	Fair
250TH Street over E. Fork of Vermillion Rv	1972	66	Fair
251ST Street over Little Vermillion River	1986	66	Fair
262ND Street over E. Fork of Vermillion Rv	2020	66	Good
263RD Street over E. Fork of Vermillion Rv	2019	66	Good
444TH Avenue over Little Vermillion River	1970	66	Fair
450TH Avenue over Little Vermillion River	2021	66	Good
451ST Avenue over Trib. to E Fork Verm Rv	1930	66	Poor
452ND Avenue over Trib. to E Fork Verm Rv	1925	66	Fair
Hawk Drive over E. Fork of Vermillion Rv	1993	66	Fair
438 Ave over I090	1964	65	Fair
258TH Street over W. Fork of Vermillion Rv	2008	50	Good
260TH Street over W. Fork of Vermillion Rv	2007	50	Fair
433RD Avenue over Tributary to Wolf Creek	1977	50	Poor
244TH Street over Wolf Creek	2003	45	Good
252ND Street over E. Fork Vermillion Rvr	2015	45	Good
255TH Street over W. Fork of Vermillion Rv	2019	45	Good
260TH Street over Trib. to W Fork Verm Rv	1925	45	Fair
263RD Street over W. Fork of Vermillion Rv	1979	45	Fair
439TH Avenue over W. Fork of Vermillion Rv	1961	45	Poor
443RD Avenue over Little Vermillion River	2005	45	Good
254TH Street over W. Fork of Vermillion Rv	1980	40	Fair
266TH Street over W. Fork of Vermillion Rv	1983	40	Fair
267TH Street over E. Fork of Vermillion Rv	1976	40	Fair
443RD Avenue over W. Fork of Vermillion Rv	1979	40	Fair
249TH Street over W. Fork of Vermillion Rv	1993	35	Fair
259TH Street over W. Fork of Vermillion Rv	1983	35	Fair
263RD Street over Wolf Creek	1961	35	Poor
267TH Street over Wolf Creek	1996	35	Fair
446TH Avenue over Little Vermillion River	1961	35	Fair
449TH Avenue over Little Vermillion River	1930	35	Fair
248TH Street over Wolf Creek	1993	30	Fair
264TH Street over Wolf Creek	1980	30	Fair
266TH Street over Tributary to Wolf Creek	2019	30	Good
266TH Street over Wolf Creek	2006	30	Good
450TH Avenue over Trib. to E Fork Verm Rv	1940	30	Fair
251ST Street over Wolf Creek	1983	25	Fair
432ND Avenue over Wolf Creek	1999	25	Good
447 Ave over I090	1964	25	Fair
245TH Street over W. Fork of Vermillion Rv	2019	24	Good
256TH Street over W. Fork of Vermillion Rv	1930	24	Fair
267TH Street over W. Fork of Vermillion Rv	1979	23	Fair
438TH Avenue over W. Fork of Vermillion Rv	2019	21	Good
431ST Avenue over Wolf Creek	1972	20	Fair
249TH Street over Wolf Creek	1978	15	Fair
262ND Street over W. Fork of Vermillion Rv	1983	10	Fair
248TH Street over W. Fork of Vermillion Rv	1917	5	Poor

Source: FHWA National Bridge Inventory, 2025.

McCook 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.