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Nd Highway 18 over Sheyenne River

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 18 over Sheyenne River 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 deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1960, making it 65 years old at the 2025 inventory.
It carries about 630 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


Structure	Continuous steel stringer or multi-beam girder
Length	about 154 ft
Location	5 South of Nd 46
NBI structure number	0018045621
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 13 over Bois De Sioux River	1929	15,200	Fair
Nd Highway 13 over Drain 18	1973	6,300	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