US Highway 85 over South Branch Green River
Billings County, North Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US Highway 85 over South Branch Green River in Billings County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 1,210 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 37 of the 60 inventoried bridges in Billings County rated good (61.7%); 2 (3.3%) 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 June 2024, on a 24-month routine inspection cycle.
- 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.
View this bridge on a map → (47.01821, -103.202)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 75 ft |
| Location | 9 North of Jct. I-94 |
| NBI structure number | 0085084342 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Billings County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 94 over Sheep Creek | 1964 | 2,600 | Fair |
| Interstate 94 over West River Rd. Int. | 1968 | 1,525 | Fair |
| Interstate 94 over West River Rd. Int. | 1968 | 1,525 | Fair |
| Interstate 94 over Little Missouri R. | 1964 | 1,300 | Fair |
| Interstate 94 over Little Missouri R. | 1964 | 1,300 | Fair |
| Interstate 94 over Sheep Creek | 1964 | 1,300 | Fair |
All bridges nearby: Billings County, ND bridge conditions · every bridge in Billings County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.