I 86 Wbl over Private Rd.;machine Pass
Power County, Idaho · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 86 Wbl over Private Rd.;machine Pass in Power County, Idaho, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1959, making it 66 years old at the 2025 inventory.
- It carries about 4,350 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 23 of the 71 inventoried bridges in Power County rated good (32.4%); 1 (1.4%) are rated poor.
- 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 → (42.78454, -112.84034)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete frame |
| Length | about 23 ft |
| Location | Near American Falls |
| NBI structure number | 000000000010780 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Power County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 86 & Ramps over Lanes Gulch | 1981 | 8,300 | Fair |
| I 86 Wbl & Ebl over Cannell Ln;machine Pass | 1980 | 8,300 | Fair |
| I 86 Wbl & Ebl over Calls Road Gs | 1979 | 8,000 | Good |
| I 86 Ebl over Uprr;pocatello Airport | 1968 | 6,750 | Fair |
| I 86 Wbl over Uprr;pocatello Airport | 1968 | 6,750 | Fair |
| I 86 Ebl over Portneuf River | 1968 | 6,750 | Fair |
All bridges nearby: Power County, ID bridge conditions · every bridge in Power County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.