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Irr US212 over Missouri Rv (oahe Lk)

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

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

Irr US212 over Missouri Rv (oahe Lk) in Potter 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 substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1958 and reconstructed in 1980, making it 67 years old at the 2025 inventory.
It carries about 521 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 15 of the 24 inventoried bridges in Potter County rated fair (62.5%); 0 (0.0%) 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	Continuous steel through truss
Length	about 4,619 ft
Location	Dewey - Potter Co. Line
NBI structure number	000000054056158
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US083 over Artichoke Ck	1989	1,490	Fair
US083 over Little Cheyenne Ck	2003	985	Fair
US083 over Little Cheyenne Ck	2003	985	Good
US083 over Trib Little Cheyenne Ck	2003	985	Good
US212 over Ck	2001	934	Fair
US212 over Ck	2001	934	Good