S 3200 E over Cub River;ne.franklin Br
Franklin County, Idaho · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S 3200 E over Cub River;ne.franklin Br in Franklin County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 18 of the 23 inventoried bridges in Franklin County rated fair (78.3%); 2 (8.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: culvert 5 to 6.
- Its most recent inspection on record is dated October 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 → (42.03272, -111.79847)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 5 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel culvert |
| Length | about 29 ft |
| Location | 1.2 N. 0.3 E. Franklin |
| NBI structure number | 000000000023355 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 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 Franklin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 91 over Cub River | 2006 | 8,600 | Fair |
| US 91 over Bear River | 2006 | 4,200 | Fair |
| SH 36 over Bear River | 2018 | 3,000 | Good |
| SH 34 over Bear River;riverdale Br | 1960 | 2,800 | Fair |
| US 91 over West Cache Canal | 1993 | 2,300 | Good |
| SH 36 over Bear River | 1960 | 1,300 | Fair |
All bridges nearby: Franklin County, ID bridge conditions · every bridge in Franklin County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.