Old Highway 93 over Big Wood River
Lincoln County, Idaho · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old Highway 93 over Big Wood River in Lincoln County, Idaho, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1945, making it 80 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2023).
- It is one of 14 of the 53 inventoried bridges in Lincoln County rated poor (26.4%); 14 (26.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now poor (substructure 5 to 4, superstructure 5 to 6).
- Its most recent inspection on record is dated November 2024, on a 12-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (43.18767, -114.31822)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 6 | Satisfactory condition |
| Substructure | 5 | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 91 ft |
| Location | 17.4 N. 4.7 E. Shoshone |
| NBI structure number | 000000000024980 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 12 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 Lincoln County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 75 over Little Wood River | 1958 | 7,700 | Good |
| SH 75 over Milner Gooding Canal | 2013 | 5,000 | Good |
| SH 75 over Big Wood River | 2013 | 5,000 | Fair |
| SH 75 over Big Wood River | 1955 | 4,500 | Fair |
| SH 75 over North Gooding Canal | 2013 | 4,400 | Good |
| US 93 over Little Wood River | 1987 | 2,300 | Fair |
All bridges nearby: Lincoln County, ID bridge conditions · every bridge in Lincoln County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.