Home › South Dakota › Bon Homme County › 40650 301ST Street over Trib. to Dry Cho

40650 301ST Street over Trib. to Dry Choteau Ck

Bon Homme County, South Dakota · rated Fair in the 2025 National Bridge Inventory

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

40650 301ST Street over Trib. to Dry Choteau Ck in Bon Homme County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1984, making it 41 years old at the 2025 inventory.
It carries about 60 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 66 of the 126 inventoried bridges in Bon Homme County rated fair (52.4%); 34 (27.0%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 25 ft
Location	1N of Avon
NBI structure number	000000005056100
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
SD050 over Drainage Ditch	1955	2,674	Good
SD050 over Snatch Ck	1956	2,649	Fair
SD050 over Charley Ck	1979	2,510	Good
SD050 over West Br Emanuel Ck	1960	2,498	Fair
SD050 over Emanuel Ck	1960	2,498	Fair
SD037 over Unnamed Ck	2019	1,604	Good