Home › North Dakota › Traill County › County Highway over N. Mayville Drain No

County Highway over N. Mayville Drain No. 8

Traill County, North Dakota · rated Good in the 2025 National Bridge Inventory

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

County Highway over N. Mayville Drain No. 8 in Traill County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 9 (excellent condition) on the 0-9 scale.
It was built in 2020, making it 5 years old at the 2025 inventory.
It carries about 20 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 46 of the 147 inventoried bridges in Traill County rated good (31.3%); 26 (17.7%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	9	Excellent condition

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

Bridge	Built	Vehicles/day	Condition
Interstate 29 over North Branch Elm River	2021	11,635	Good
Interstate 29 over Buffalo Coulee	1969	9,400	Good
Interstate 29 over Branch of Buffalo Coulee	1969	9,100	Good
Interstate 29 over Branch of Buffalo Coulee	1969	9,100	Good
Nd Highway 18 over Goose River	1966	4,800	Fair
Interstate 29 over Goose River	1970	4,550	Poor