147TH Ave NE over South Branch Park River
Walsh County, North Dakota · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 147TH Ave NE over South Branch Park River in Walsh County, North Dakota, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1990 and reconstructed in 2023, making it 35 years old at the 2025 inventory.
- It carries about 22 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 54 of the 257 inventoried bridges in Walsh County rated poor (21.0%); 54 (21.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2023, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (48.42721, -97.47001)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 53 ft |
| Location | 3 West of Grafton |
| NBI structure number | 000000050139080 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Walsh County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nd Highway 17 over Creek | 1981 | 3,870 | Good |
| Nd Highway 17 over Drain | 2018 | 3,870 | Good |
| US Highway 81 over Park River | 1971 | 3,270 | Fair |
| US Highway 81 over Grafton Flood Deversion | 2018 | 3,270 | Good |
| US Highway 81 over Drainage Ditch | 1995 | 2,550 | Good |
| US Highway 81 over Creek | 1951 | 2,490 | Fair |
All bridges nearby: Walsh County, ND bridge conditions · every bridge in Walsh County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.