Stc 1775;TURNER Rd over Pacificorp Penstock
Caribou County, Idaho · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Stc 1775;TURNER Rd over Pacificorp Penstock in Caribou County, Idaho, 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 2016, making it 9 years old at the 2025 inventory.
- It carries about 520 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 12 of the 45 inventoried bridges in Caribou County rated good (26.7%); 2 (4.4%) 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 → (42.57653, -111.74292)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 77 ft |
| Location | 0.1 W Grace |
| NBI structure number | 000000000019176 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Caribou County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 34 over Uprr;sodas 3RD E.st Op | 1978 | 5,600 | Fair |
| US 30 over UPRR; Soda Springs Op | 1988 | 3,500 | Fair |
| SH 34 over Bear River;grace Bridge | 1974 | 2,200 | Fair |
| SH 34 over North Extension Canal | 1978 | 2,200 | Fair |
| Blackfoot River Rd over Blackfoot River | 1980 | 1,000 | Good |
| SH 34 over Blackfoot River | 1979 | 770 | Fair |
All bridges nearby: Caribou County, ID bridge conditions · every bridge in Caribou County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.