Home › South Dakota › Kingsbury County › 425TH Avenue over Redstone Ck

425TH Avenue over Redstone Ck

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

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

425TH Avenue over Redstone Ck in Kingsbury 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 superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1965, making it 60 years old at the 2025 inventory.
It carries about 130 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 19 of the 35 inventoried bridges in Kingsbury County rated fair (54.3%); 10 (28.6%) 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	Concrete stringer or multi-beam girder
Length	about 30 ft
Location	.3N Manchester
NBI structure number	000000039070117
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US014 over Ck	1988	2,420	Fair
US014 over Ck	1975	2,255	Fair
US014 over South Fork Pearl Ck	1965	1,743	Fair
US014 over Redstone Ck	1987	1,693	Fair
SD025 over Ck	2023	1,279	Good
208TH St over South Fork Pearl Ck	1933	913	Poor