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Nd Highway 13 over Drain 18

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

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

Nd Highway 13 over Drain 18 in Richland 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 culvert, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1973 and reconstructed in 2002, making it 52 years old at the 2025 inventory.
It carries about 6,300 vehicles a day (traffic count year 2019).
Its listed owner is the state highway agency.
It is one of 102 of the 196 inventoried bridges in Richland County rated fair (52.0%); 24 (12.2%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	6	Satisfactory condition

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

Bridge	Built	Vehicles/day	Condition
Nd Highway 13 over Bois De Sioux River	1929	15,200	Fair
Interstate 29 over County Drain 2	1973	5,600	Good
Interstate 29 over County Drain	1973	5,600	Good
Nd Highway 13 over Small Creek	1973	5,530	Fair
Nd Highway 13 over Creek	1973	5,170	Good
Interstate 29 over County Drain 32	1973	5,100	Good