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US014 Ef over Little Prairie Dog Ck

Stanley County, South Dakota · rated Poor in the 2025 National Bridge Inventory

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

US014 Ef over Little Prairie Dog Ck in Stanley County, South Dakota, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1920, making it 105 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 6 of the 37 inventoried bridges in Stanley County rated poor (16.2%); 6 (16.2%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 32 ft
Location	1.9 N Haakon Co Line
NBI structure number	000000059021402
Condition class	Poor

Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.

Bridge	Built	Vehicles/day	Condition
US083 over Bad Rv	1956	6,040	Fair
SD1806 over Ck	1963	1,566	Fair
SD1806 over Ck	1963	1,566	Fair
SD1806 over Draw	2010	1,566	Good
US014 over Frozenman Ck	2002	1,406	Good
US014 over Willow Ck	1984	1,406	Good