County Highway over I-29/NORTHWOOD Sep
Grand Forks County, North Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Highway over I-29/NORTHWOOD Sep in Grand Forks County, North Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 110 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.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (superstructure 7 to 6).
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- 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.
View this bridge on a map → (47.73018, -97.07781)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 265 ft |
| Location | 3 South Nd 15 |
| NBI structure number | 0029127036 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Grand Forks County
| 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 |
All bridges nearby: Grand Forks County, ND bridge conditions · every bridge in Grand Forks County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.