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30270 425TH Avenue over Beaver Creek

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

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

30270 425TH Avenue over Beaver Creek in Bon Homme County, South Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2021, making it 4 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 26 of the 126 inventoried bridges in Bon Homme County rated good (20.6%); 34 (27.0%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 50 ft
Location	8E of Tyndall
NBI structure number	000000005240117
Condition class	Good

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