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Every bridge in Charles Mix County, South Dakota

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

103 inventoried bridges, busiest first

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

Charles Mix County, South Dakota, has 103 bridges in the 2025 National Bridge Inventory: 39 rated good, 40 fair, and 24 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
SD045 over Drainage Channel	1994	3,934	Good
SD044 over Platte Ck	1964	2,420	Fair
SD044 over Castalia Ck	1963	1,538	Good
Irr US018 over Saint Francis Bay	2023	1,494	Good
Irr SD050 over Trib Choteau Ck	2020	1,329	Good
Old Irr SD050 over Ck	1940	1,329	Fair
Irr US018 over Lake Andes Outlet	2005	1,298	Good
Irr US018 over Trib to Lake Andes	2005	1,298	Good
Irr SD046 over Choteau Ck	1968	1,199	Good
Irr SD046 over Ck	1968	1,199	Fair
Irr SD046 over Ck	1968	1,199	Good
SD045 over Ck	1998	1,062	Good
SD045 over Platte Ck	1998	1,062	Good
SD044 over Mo. Rv (lk Francis Case)	1966	980	Fair
SD045 over Ck	1948	963	Fair
State Highway 281 over Ft. Randall Spillway	1956	954	Fair
SD045 over Ck	1948	875	Good
29490 395TH Avenue over Choteau Creek	1955	564	Fair
29660 395TH Avenue over Creek	1991	564	Fair
Irr SD050 over Garden Ck	1941	556	Fair
SD050 over Pease Ck	1955	554	Fair
SD050 over Br Pease Ck	1954	553	Good
SD050 over Pease Ck	1954	553	Fair
SD050 over Pease Ck	1954	553	Fair
Irr US018 over Choteau Ck	1960	387	Fair
Irr US018 over Ck	1961	387	Fair
29090 395TH Avenue over Creek	1935	289	Fair
28960 395TH Avenue over Greasy Horn Creek	1935	287	Fair
28860 395TH Avenue over Choteau Creek	1963	241	Fair
30010 400TH Avenue over Choteau Creek	1958	205	Poor
36660 271ST Street over Platte Creek	1940	196	Fair
SD050 over Ck	1984	190	Good
SD050 over Ck	1984	190	Good
35320 270 Street over Snake Ck	2003	175	Good
SD1804 over Spring Ck	1974	153	Good
SD1804 over Dry Ck	1970	126	Good
SD1804 over Platte Ck	1970	126	Good
40120 302ND Street over Choteau Creek	1974	102	Fair
303RD Street over Choteau Creek	1997	100	Fair
38630 291ST Street over Lake Andes Lake	2007	100	Good
38840 288TH Street over Lake Andes Lake	2007	100	Good
North Dike Rd / 28 over Lake Andes	2007	100	Good
South Dike Rd. / 2 over Lake Andes	2007	100	Good
27040 371ST Avenue over Platte Creek	1968	95	Fair
38560 303RD Street over Seven Mile Creek	2005	70	Good
40430 306TH Street over Choteau Creek	2016	60	Good
40260 312TH Street over Choteau Creek	1974	50	Fair
County Road 2 over Bull Creek	1975	50	Fair
County Road over Slaughter Creek	1974	50	Good
22730 363RD Avenue over Trib. to Platte Creek	2018	48	Good
27180 369TH Avenue over Platte Creek	1940	48	Poor
27380 366TH Avenue over Platte Creek	2019	48	Good
27680 364TH Avenue over Platte Creek	2005	48	Good
27720 363RD Avenue over Platte Creek	1977	48	Poor
28490 376TH Avenue over Pease Creek	2017	48	Good
28870 385TH Avenue over Creek	1945	48	Poor
29110 393RD Avenue over Creek	1925	48	Poor
29470 381ST Avenue over Creek	1979	48	Poor
29620 396TH Avenue over Choteau Creek	1930	48	Poor
29640 396TH Avenue over Choteau Creek	1986	48	Fair
30040 401ST Avenue over Creek	1945	48	Fair
30090 401ST Avenue over Choteau Creek	1925	48	Fair
30410 390 Ave over Mosquito Ck	1941	48	Poor
30480 391ST Street over Mosquito Creek	1974	48	Poor
35400 271ST Street over Snake Creek	1963	48	Fair
36460 275TH Street over Platte Creek	2015	48	Good
36460 276TH Street over Platte Creek	1936	48	Poor
36590 274TH Street over Platte Creek	1979	48	Fair
36650 273RD Street over Platte Creek	1990	48	Good
37000 271ST Street over Platte Creek	1986	48	Fair
37380 281ST Street over Pease Creek	1945	48	Fair
37570 287 Street over Pease Ck	1920	48	Poor
37590 286TH Street over Pease Creek	1974	48	Poor
375TH Avenue over Pease Creek	1965	48	Fair
38080 291ST Street over Creek	1935	48	Poor
38450 292ND Street over Creek	1935	48	Poor
38580 300TH Street over Marty Mission Spillway	1937	48	Fair
38710 294TH Street over Creek	1930	48	Poor
38890 286TH Street over Andes Creek	1930	48	Poor
38930 302 St over Ck	1941	48	Poor
39120 305TH Street over Mosquito Creek	1920	48	Poor
39320 291ST Street over Creek	1935	48	Fair
39360 294TH Street over Choteau Creek	1986	48	Fair
39370 295TH Street over Choteau Creek	1998	48	Fair
39390 291ST Street over Creek	1935	48	Fair
39430 291ST Street over Choteau Creek	1997	48	Good
39460 289TH Street over Creek	1940	48	Poor
39480 289 St over Choteau Ck	2009	48	Good
39540 287TH Street over Choteau Creek	1940	48	Poor
39740 296TH Street over Creek	1912	48	Poor
39960 300TH Street over Choteau Creek	1977	48	Fair
40130 305TH Street over Choteau Creek	2019	48	Good
40430 301ST Street over Dry Choteau Creek	2021	48	Good
39420 292ND Street over Drainage	1989	40	Good
39450 292ND Street over Choteau Creek	1974	40	Poor
270TH Street over Snake Creek	1999	38	Fair
40310 307TH Street over Choteau Creek	1981	34	Fair
40410 307 St over Dry Choteau Ck	2019	34	Good
37310 268TH Street over Platte Creek	1988	26	Fair
26930 373RD Avenue over Platte Creek	2008	22	Good
294TH Street over Garden Ck	1940	20	Poor
38910 284TH Street over Andes Creek	2015	15	Good
29120 383RD Avenue over Drainage Ditch	1930	4	Poor

Source: FHWA National Bridge Inventory, 2025.

Charles Mix 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.