STC3857;SND Hollow over A Line Canal
Payette County, Idaho · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- STC3857;SND Hollow over A Line Canal in Payette County, Idaho, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1965, making it 60 years old at the 2025 inventory.
- It carries about 1,300 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 49 of the 65 inventoried bridges in Payette County rated fair (75.4%); 3 (4.6%) 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 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 → (43.89327, -116.77561)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 28 ft |
| Location | 5.6S 2.2E New Plymouth |
| NBI structure number | 000000000028505 |
| 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) | 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 Payette County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 30 Ebl Spur over Snake R;fruitland Bridge | 1967 | 24,500 | Good |
| US 95 over Payette River | 1968 | 19,500 | Fair |
| I 84 Ebl over SE 9TH Avenue Gs | 1961 | 15,500 | Good |
| I 84 Wbl over SE 9TH Avenue Gs | 1961 | 15,500 | Good |
| I 84 Ebl over D Line Canal | 1961 | 15,500 | Good |
| I 84 Wbl over D Line Canal | 1961 | 15,500 | Fair |
All bridges nearby: Payette County, ID bridge conditions · every bridge in Payette County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.