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Every bridge in Aurora County, South Dakota

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

61 inventoried bridges, busiest first

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

Aurora County, South Dakota, has 61 bridges in the 2025 National Bridge Inventory: 25 rated good, 29 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 over Ck	1965	9,890	Fair
I090 E over Platte Ck	1964	4,425	Fair
I090 W over Platte Ck	1964	4,425	Fair
US281 over I090	1965	1,694	Fair
US281 over Ck	2007	1,434	Good
US281 over Ck	1960	1,284	Fair
US281 over West Br Firesteel Ck	1959	1,284	Fair
US281 over Branch of Firesteel Ck	1959	1,104	Good
US281 over Firesteel Ck	1959	1,104	Good
SD258 over I090	1965	798	Good
SD258 over Snow Ck	1965	798	Good
SD258 over Snow Ck	1950	798	Good
Old Hwy 16 over Ck	1951	495	Fair
CR 11 - 374 Ave over Creek-trib to White Lake	2012	425	Good
252ND St (cr-34) over I090	1964	295	Fair
SD090 P over I090	1964	261	Fair
252 St Old Hwy 16 over Platte Ck	1950	170	Fair
243 St over Ck	1978	131	Fair
385 Ave over Ck	1934	117	Fair
242 St over Ck	1917	101	Poor
243 St over Ck	1924	101	Fair
260 St over Platte Ck	2004	82	Good
370 Ave over I090	1965	75	Fair
265 St over Platte Ck	1967	66	Poor
244 St over Ck	1935	65	Fair
246 St over Firesteel Ck	1930	65	Poor
247 St over West Firesteel Ck	1982	65	Fair
392 Ave over Ck	1935	65	Good
392 Ave over West Firesteel Ck	1951	65	Fair
378 Ave over West Firesteel Ck	1936	62	Poor
247 St over Ck	1936	60	Fair
250 St over Ck	2018	60	Good
386 Ave over Ck	1940	55	Fair
386 Ave over West Firesteel Ck	1930	53	Fair
1ST St Plankinton over Ck	2008	50	Fair
386 Ave over Ck	1945	50	Fair
380 Ave (fas 6119) over I090	1965	48	Good
265 St over South Fork Platte Creek	1941	40	Good
393 Ave over Ck	2023	40	Good
392 Ave over I090	1965	38	Good
I090 Wf (392 Ave) over Ck	1965	38	Good
262 St over Platte Ck	1999	35	Good
384 Ave over I090	1965	35	Good
241 St over Br Firesteel Ck	2012	33	Fair
243 St over Firesteel Ck	1930	33	Fair
244 St over Firesteel Ck	1940	33	Poor
245 St over Firesteel Ck	2024	33	Good
248 St over Ck	2008	33	Fair
249 St over Ck	1972	33	Fair
264 St over Platte Ck	2024	33	Good
266 St over Platte Ck	2006	33	Good
372 Ave over Platte Ck	2018	33	Good
383 Ave over West Firesteel Ck	1973	33	Poor
385 Ave over West Firesteel Ck	1973	33	Good
390 Ave over Firesteel Ck	1999	33	Fair
391 Ave over Ck	2020	33	Good
391 Ave over Ck	2021	33	Good
391 Ave over West Firesteel Ck	1925	33	Poor
247 St over Ck	1984	30	Good
377 Ave over I090	1965	25	Fair
393 Ave over Ck	1940	24	Fair

Source: FHWA National Bridge Inventory, 2025.

Aurora 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.