Old River Road over Steamboat Creek
Shoshone County, Idaho · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old River Road over Steamboat Creek in Shoshone 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 1999, making it 26 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 174 of the 261 inventoried bridges in Shoshone County rated fair (66.7%); 26 (10.0%) 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 July 2024, on a 24-month routine inspection cycle.
- 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 → (47.66214, -116.15494)
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 | Prestressed concrete stringer or multi-beam girder |
| Length | about 60 ft |
| Location | 7.1 N. 4.5 E Enaville |
| NBI structure number | 000000000030846 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Shoshone County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 90 over Stc 5766;SILVERTON Ic | 1978 | 11,000 | Fair |
| I 90 EB & WB over S.fk.cda R;fr.rd. | 1978 | 11,000 | Fair |
| I 90 over S.fk.coeur Dalene River | 1987 | 11,000 | Fair |
| I 90 Ebl & Wbl over Crossroad Bd;w.wallace I | 1987 | 11,000 | Fair |
| I 90 over I 90B;CANYON CR | 1991 | 11,000 | Fair |
| I 90 Spur over Canyon Creek | 1940 | 10,500 | Fair |
All bridges nearby: Shoshone County, ID bridge conditions · every bridge in Shoshone County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.