Hillside Road over Mission Creek
Lake County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Hillside Road over Mission Creek in Lake County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2021, making it 4 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2025).
- Its listed owner is the county highway agency.
- It is one of 70 of the 116 inventoried bridges in Lake County rated good (60.3%); 13 (11.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2023, 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 → (47.30667, -114.05444)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 40 ft |
| Location | 1.5 Miles E. St. Ignatius |
| NBI structure number | 000000202108035 |
| Condition class | Good |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Lake County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr - US 93 over Pablo Feeder Canal | 2006 | 15,997 | Good |
| US 93 over Wildlife Crossing | 2007 | 10,897 | Good |
| US 93 over Wildlife Crossing | 2007 | 10,897 | Good |
| US 93 over Agricultural Crossing | 2007 | 10,897 | Good |
| Irr - US 93 over Jocko River | 2005 | 8,775 | Good |
| US 93 over Spring Creek | 2006 | 8,775 | Good |
All bridges nearby: Lake County, MT bridge conditions · every bridge in Lake County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.