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Nd Highway 15 over I-29/THOMPSON Interchang

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

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

Nd Highway 15 over I-29/THOMPSON Interchang in Grand Forks 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 1967 and reconstructed in 1983, making it 58 years old at the 2025 inventory.
It carries about 2,850 vehicles a day (traffic count year 2019).
Its listed owner is the state highway agency.
It is one of 196 of the 337 inventoried bridges in Grand Forks County rated fair (58.2%); 36 (10.7%) 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 265 ft
Location	Junction Nd 15
NBI structure number	0029130043
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US Highway 2 over Red River of the North	1963	21,500	Fair
US Highway 2 over English Coulee	1988	20,450	Good
Columbia Road over Demers Ave & Bnrr	1984	19,000	Fair
Nd 297/DEMERS Ave over Bnrr-city Street	1972	18,500	Fair
Interstate 29 over English Coulee	1967	16,700	Fair
Nd Highway 297 over English Coulee	1970	14,000	Fair