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40340 287 St. over Ck

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

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

40340 287 St. over Ck in Douglas 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 1912 and reconstructed in 1982, making it 113 years old at the 2025 inventory.
It carries about 20 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 7 of the 44 inventoried bridges in Douglas County rated poor (15.9%); 7 (15.9%) 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	Prestressed concrete tee beam
Length	about 24 ft
Location	3.0S 1.4E of Delmont
NBI structure number	000000022294190
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
SD044 over Choteau Ck	1961	1,785	Fair
SD044 over Br Choteau Ck	1960	1,785	Good
SD044 over Andes Ck	1957	1,516	Fair
US281 over Ck	1998	1,232	Good
Irr US018 over Creek	1961	556	Poor
Irr US018 over Branch of Choteau Ck	1961	556	Fair