US 287 over Mud Spring Gulch
Broadwater County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 287 over Mud Spring Gulch in Broadwater County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2013, making it 12 years old at the 2025 inventory.
- It carries about 6,444 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 10 of the 37 inventoried bridges in Broadwater County rated good (27.0%); 4 (10.8%) 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 September 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 → (45.94352, -111.59732)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 39 ft |
| Location | 5M NW Three Forks |
| NBI structure number | 000000000007036 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 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 Broadwater County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US287 over Beaver Creek | 1992 | 6,930 | Fair |
| US 12 over Missouri River | 1935 | 6,843 | Fair |
| US 287 over Int Three Forks I 90 | 2012 | 6,444 | Fair |
| US 287 over Deep Creek | 2012 | 5,485 | Fair |
| US 287 over Six Mile Creek | 2020 | 5,250 | Good |
| US 287 over RR | 2020 | 5,250 | Good |
All bridges nearby: Broadwater County, MT bridge conditions · every bridge in Broadwater County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.