Home › North Dakota › Oliver County › 37th AVE SW over Baukol-noonan Mine Road

37th AVE SW over Baukol-noonan Mine Road

Oliver County, North Dakota · rated Fair in the 2025 National Bridge Inventory

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

37th AVE SW over Baukol-noonan Mine Road in Oliver County, North 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 1985, making it 40 years old at the 2025 inventory.
It carries about 115 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 11 of the 23 inventoried bridges in Oliver County rated fair (47.8%); 1 (4.3%) 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 prestressed concrete single box beam
Length	about 205 ft
Location	3 South 2 East of Center
NBI structure number	000000033123160
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Nd Highway 200 over Missouri River	1971	1,430	Fair
Nd Highway 200 over Creek	1970	1,140	Fair
Nd Highway 200 over Creek	1971	940	Poor
Nd Highway over Creek	1976	670	Good
Nd Highway over Square Butte Creek	1987	650	Good
Nd Highway over Br. Square Butte Creek	1948	560	Fair