Pine Creek Road over Grimes Creek
Boise County, Idaho · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Pine Creek Road over Grimes Creek in Boise County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1947, making it 78 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 1991).
- It is one of 39 of the 89 inventoried bridges in Boise County rated fair (43.8%); 5 (5.6%) 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 2023, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (43.76626, -115.97961)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 52 ft |
| Location | 9.5 Mi S.W. of Id City |
| NBI structure number | 040203000001062 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| 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 |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Boise County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 55 over McLEOD WAY | 2024 | 10,500 | Good |
| SH 55 over Payette River | 2021 | 8,800 | Good |
| SH 55 over Power Canal | 1994 | 8,800 | Good |
| SH 55 over Uprr;horseshoe Bend Op | 1971 | 7,800 | Fair |
| SH 55 over Payette River | 1971 | 7,800 | Fair |
| SH 55 over S.fk.payette River | 1955 | 7,300 | Fair |
All bridges nearby: Boise County, ID bridge conditions · every bridge in Boise County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.