Stc 4786;JOHNSON over Orofino Creek
Clearwater County, Idaho · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Stc 4786;JOHNSON over Orofino Creek in Clearwater 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 1978, making it 47 years old at the 2025 inventory.
- It carries about 2,000 vehicles a day (traffic count year 2023).
- Its listed owner is a city or municipal highway agency.
- It is one of 38 of the 88 inventoried bridges in Clearwater County rated good (43.2%); 6 (6.8%) 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 June 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 → (46.47721, -116.25245)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 102 ft |
| Location | In Orofino;johnson Ave. |
| NBI structure number | 000000000028990 |
| Condition class | Good |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | June 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 Idaho department of transportation.
Busiest bridges in Clearwater County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 7 over Clearwater River | 1998 | 7,800 | Fair |
| STC4782;GRANGEMONT over Whiskey Cr.;orofino CR. | 1951 | 2,800 | Fair |
| SH 7 over N.fk. Clearwater River | 1999 | 2,100 | Fair |
| STC4782;GRANGEMONT over Whiskey Creek;stanton Br | 1954 | 1,900 | Good |
| SH 8 over Ruby Creek | 1976 | 1,000 | Fair |
| SH 11 over Jim Ford Creek | 1987 | 1,000 | Good |
All bridges nearby: Clearwater County, ID bridge conditions · every bridge in Clearwater County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.