46th Street SW over Heart River
Stark County, North Dakota · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 46th Street SW over Heart River in Stark 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 1936, making it 89 years old at the 2025 inventory.
- It carries about 5 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 8 of the 156 inventoried bridges in Stark County rated poor (5.1%); 8 (5.1%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 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 → (46.74305, -102.31755)
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 41 ft |
| Location | 9 South of Richardson |
| NBI structure number | 000000045144190 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | June 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 Stark County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| State Highway 22 over I-94/ND 22 Interchange | 1964 | 19,000 | Fair |
| Nd Highway 22 over Creek | 1953 | 15,940 | Fair |
| Nd Highway 22 over Heart River | 1931 | 9,940 | Fair |
| I-94 Business Loop over Creek | 1949 | 8,690 | Fair |
| Nd Highway 22 over Green River | 2012 | 7,155 | Good |
| Interstate 94 over Co Hwy/zenith Separation | 2016 | 5,205 | Good |
All bridges nearby: Stark County, ND bridge conditions · every bridge in Stark County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.