Birch Rd over Ross Fork Creek 018
Judith Basin County, Montana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Birch Rd over Ross Fork Creek 018 in Judith Basin County, Montana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1925, making it 100 years old at the 2025 inventory.
- It carries about 16 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 7 of the 45 inventoried bridges in Judith Basin County rated poor (15.6%); 7 (15.6%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: deck 5 to 4.
- Status change: newly closed since 2024.
- Its most recent inspection on record is dated June 2024, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (46.93961, -109.7844)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 4 | Poor condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Steel through truss |
| Length | about 70 ft |
| Location | 2M NW Sipple |
| NBI structure number | L23027001+04001 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Judith Basin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 87 over Dawkins Branch | 2021 | 3,335 | Good |
| US 87 over Ross Fork Creek | 1971 | 3,335 | Good |
| US 87 over Otter Creek | 1961 | 2,874 | Good |
| US 87 over Otter Creek | 1961 | 2,874 | Good |
| US 87 over Otter Creek | 1961 | 2,874 | Good |
| US 87 over Stockpass | 1961 | 2,753 | Good |
All bridges nearby: Judith Basin County, MT bridge conditions · every bridge in Judith Basin County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.