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28450 423 Ave over Lonetree Ck

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

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

28450 423 Ave over Lonetree Ck in Hutchinson 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 1985, making it 40 years old at the 2025 inventory.
It carries about 69 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 24 of the 160 inventoried bridges in Hutchinson County rated poor (15.0%); 24 (15.0%) 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 62 ft
Location	1.5N 3.0W of Olivet
NBI structure number	000000034190165
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
SD037 over Pony Ck	1992	3,971	Good
SD037 over Ck	2000	3,375	Good
SD037 over South Fork Twelve Mile C	2000	3,234	Good
US081 over Ck	1994	2,385	Good
SD037 over North Br Dry Ck	2000	2,259	Good
SD037 over Drainage Ditch	2000	2,259	Good