Barracks Lane over Lemhi River
Lemhi County, Idaho · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Barracks Lane over Lemhi River in Lemhi County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1930 and reconstructed in 1987, making it 95 years old at the 2025 inventory.
- It carries about 60 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 40 of the 114 inventoried bridges in Lemhi County rated fair (35.1%); 9 (7.9%) are rated poor.
- 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 → (45.11539, -113.77472)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 5 | Fair condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Steel through truss |
| Length | about 94 ft |
| Location | 4.2 S. 6.0 E. Salmon |
| NBI structure number | 000000000032700 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Lemhi County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 93 over Salmon River;salmon Br. | 1926 | 7,300 | Poor |
| US 93 over Salmon River;carmen Br. | 1970 | 2,100 | Fair |
| US 93 over Carmen Creek | 1931 | 2,100 | Fair |
| US 93 over Tower Creek | 1931 | 2,100 | Fair |
| SH 28 over Lemhi River | 2001 | 1,700 | Good |
| SH 28 over Lemhi River | 2001 | 1,700 | Good |
All bridges nearby: Lemhi County, ID bridge conditions · every bridge in Lemhi County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.