Martinsdale Reserv over Martinsdale Reservoir Ca
Meagher County, Montana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Martinsdale Reserv over Martinsdale Reservoir Ca in Meagher 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 1995, making it 30 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2025).
- It is one of 36 of the 53 inventoried bridges in Meagher County rated fair (67.9%); 7 (13.2%) 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 August 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 → (46.45414, -110.30739)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 22 ft |
| Location | SE Martinsdale |
| NBI structure number | 000000000007033 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 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 Meagher County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 12 over South Fork Smith River | 1997 | 1,023 | Fair |
| US 89 Fh 32 over North Fork Smith River | 1955 | 607 | Fair |
| Main St over North Fork Smith River | 1962 | 575 | Fair |
| US 12 over N Fork Musselshell R | 2014 | 508 | Fair |
| US 12 over Four Mile Creek | 1937 | 486 | Fair |
| US 89 Fh 32 over Sheep Creek | 1939 | 376 | Fair |
All bridges nearby: Meagher County, MT bridge conditions · every bridge in Meagher County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.