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Every bridge in Codington County, South Dakota

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

75 inventoried bridges, busiest first

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

Codington County, South Dakota, has 75 bridges in the 2025 National Bridge Inventory: 15 rated good, 46 fair, and 14 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
US212 over Big Sioux Rv	2019	14,592	Good
US212 Ser Rd over Ck	1970	12,968	Fair
US212 over Willow Ck	1970	10,862	Fair
US081 over Big Sioux Rv	1966	7,665	Fair
W Kemp Avenue over Big Sioux River	1935	5,053	Fair
14TH Ave. N Wtn. over Big Sioux Rv	1974	4,970	Poor
I029 N over 458 Ave	1972	4,595	Fair
I029 S over 458 Ave	1972	4,595	Fair
I029 N over US212	1971	4,225	Fair
I029 N over Willow Ck	1973	4,225	Fair
I029 S over US212	1970	4,225	Fair
I029 S over Willow Ck	1973	4,225	Fair
I029 N over 164 St (fas 6287)	1973	4,140	Fair
I029 N over Ck Burlington Nor RR	1974	4,140	Fair
I029 S over 164 St (fas 6287)	1973	4,140	Fair
I029 S over Ck Burlington Nor RR	1974	4,140	Fair
3RD Avenue NW over Big Sioux River	2022	4,035	Good
20TH Avenue SE over Big Sioux River	2010	3,464	Fair
Irr SD020 over Lake Kampeska Outlet	1958	3,365	Fair
City Street over Big Sioux Rv	1990	3,089	Good
31 St NE over Willow Creek	1990	1,904	Poor
SD020 over Sumner Slough	2003	1,876	Good
4TH Avenue SW over Big Sioux River	1977	1,831	Fair
455 Avenue over Ck	1985	1,758	Good
US081 over I029	1973	1,691	Fair
Sioux Conifer Road over Big Sioux Rv	1940	1,499	Poor
455 Avenue over Soo Ck	1999	1,460	Good
455 Avenue over Ck	1982	1,425	Fair
455 Avenue over Ck	1979	1,167	Fair
455 Avenue over Mahoney Ck	1940	1,167	Poor
SD020 over I029	1974	844	Fair
455 Avenue over Ck	1940	672	Poor
N. Lake Drive over Creek	1931	640	Fair
460 Avenue over Willow Ck	2001	472	Poor
176 Street over Big Sioux Rv	1971	468	Poor
164 Street over Big Sioux Rv	1966	397	Fair
463 Avenue over Willow Ck	1950	340	Fair
176 St over I029	1972	220	Fair
464 Avenue over Stray Horse Ck	1961	218	Fair
464 Avenue over Stray Horse Ck	1961	218	Fair
1ST Ave NE over Willow Ck	2008	200	Fair
S Broadway Wtn over Big Sioux Rv	1962	169	Fair
20TH Ave S Bypass over Pelican Lake Channel	2012	100	Good
20TH Ave S Bypass over Pelican Lake Cutoff Chan	2012	100	Good
459 Ave over Willow Ck	2006	100	Fair
161 St over I029	1974	77	Fair
155 Street over Ck	1941	73	Fair
158 Street over Ck	1928	73	Fair
159 Street over Big Sioux Rv	2020	73	Good
165 Street over Big Sioux Rv	1987	73	Fair
166 St over I029	1973	73	Fair
167 Street over Willow Ck	1910	73	Poor
172 Street over Ck	1940	73	Poor
177 Street over Big Sioux Rv	1920	73	Poor
43RD St. Wtn. over Willow Ck	1996	73	Fair
443 Avenue over Ck	1989	73	Good
453 Avenue over Soo Ck	1980	73	Fair
454 Avenue over Soo Ck	1991	73	Good
456 Avenue over Gravel Ck	1997	73	Good
456 Avenue over Mahoney Ck	1991	73	Good
20TH Ave S Bypass over Willow Ck	2010	60	Fair
Oak Street over Willow Ck	1988	60	Poor
SD020 P over Ck	1931	60	Poor
160 Street over Ck	1999	50	Fair
170 Street over Willow Ck	1995	49	Good
175 Street over Big Sioux Rv	1986	41	Fair
162 Street over Big Sioux Rv	1985	40	Poor
Cottonwood Street over Big Sioux Rv	1973	40	Poor
Oak Street over Willow Ck	1988	40	Fair
174 Street over Stray Horse Ck	1988	25	Fair
161 Street over Gravel Ck	1955	21	Fair
177 St over Stray Horse Ck	2006	20	Fair
155 Street over Big Sioux Rv	1996	16	Fair
459 Avenue over Ck	1954	16	Fair
461 Avenue over Gravel Ck	1998	10	Good

Source: FHWA National Bridge Inventory, 2025.

Codington 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.