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Irr SD050 over Crow Ck

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

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

Irr SD050 over Crow Ck in Buffalo 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 1999, making it 26 years old at the 2025 inventory.
It carries about 928 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 8 of the 25 inventoried bridges in Buffalo County rated good (32.0%); 1 (4.0%) 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	Continuous steel stringer or multi-beam girder
Length	about 268 ft
Location	7.2 S Jct Sd 34
NBI structure number	000000009126149
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Bia Rte 4 over Campbell Creek	2013	1,720	Good
SD045 over Crow Ck	1960	949	Fair
Irr SD050 over Wolf Ck	1954	928	Fair
Irr SD034 over East Fork Soldier Ck	1962	918	Fair
Irr SD047 over Soldier Ck	1963	917	Fair
SD045 over Crow Ck	1958	755	Fair