S 327 over Little Muddy Creek
Roosevelt County, Montana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S 327 over Little Muddy Creek in Roosevelt County, Montana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2020, making it 5 years old at the 2025 inventory.
- It carries about 267 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 36 of the 57 inventoried bridges in Roosevelt County rated fair (63.2%); 7 (12.3%) 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 (deck 7 to 6).
- Its most recent inspection on record is dated December 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 → (48.11886, -104.16048)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 141 ft |
| Location | 3M SE Bainville |
| NBI structure number | 000000202007055 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 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 Montana department of transportation.
Busiest bridges in Roosevelt County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr - US 2 over Mosquito Creek | 1986 | 4,269 | Fair |
| Irr - US 2 over Little Wolf Creek | 1988 | 4,269 | Fair |
| Irr - US 2 over Poplar River | 2000 | 2,296 | Fair |
| S 16 over Sheep Creek | 1970 | 2,129 | Fair |
| Irr - US 2 over Tule Creek | 1958 | 2,054 | Fair |
| Irr - US 2 over Chelsea Creek | 1960 | 2,054 | Poor |
All bridges nearby: Roosevelt County, MT bridge conditions · every bridge in Roosevelt County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.