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425TH Ave over Redstone Ck

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

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

425TH Ave over Redstone Ck in Kingsbury 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 7 (good condition) on the 0-9 scale.
It was built in 1989, making it 36 years old at the 2025 inventory.
It carries about 150 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 6 of the 35 inventoried bridges in Kingsbury County rated good (17.1%); 10 (28.6%) 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 stringer or multi-beam girder
Length	about 56 ft
Location	0.9 S Manchester
NBI structure number	000000039070129
Condition class	Good

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