Home › South Dakota › Edmunds County

Bridge conditions in Edmunds County, South Dakota

20 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory

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

About one in 4 bridges in Edmunds County is rated in poor condition: 5 of 20 on the federal inventory, one of the higher shares in South Dakota.

5 of the 20 bridges in Edmunds County, South Dakota, are rated in poor condition (25.0%) in the 2025 National Bridge Inventory, as of August 20, 2026.
7 bridges (35.0%) are rated good and 8 (40.0%) fair.
The median Edmunds County bridge was built in 1992.
The busiest poor-rated bridge is US012 over Ck (built 1974), carrying about 2,666 vehicles a day.

Good 35.0% · Fair 40.0% · Poor 25.0% of 20 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
US012 over Ck	1974	2,666	Poor
142ND Street over Snake Creek	1959	150	Poor
370TH Avenue over Creek	1974	114	Poor
130TH Street over Snake Creek	1980	31	Poor
369TH Avenue over Unnamed Creek	1980	31	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US012 over Preachers Run Ck	1974	3,329	Fair
US012 over Burlington Northern RR	1970	3,329	Fair
US012 over Ck	1974	2,666	Poor
US012 over BNSF RR	2006	2,068	Good
SD045 over Ck	1986	660	Fair
SD045 over Ck	1992	391	Good
SD045 over Ck	1992	391	Good
SD045 over Ck	1992	391	Fair
SD045 over Ck	1992	391	Fair
142ND Street over Creek	2009	209	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of South Dakota: South Dakota bridge conditions by county · every download on the data page.

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