Snarr Rd; W 33RD N over Great Western Canal
Bonneville County, Idaho · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Snarr Rd; W 33RD N over Great Western Canal in Bonneville County, Idaho, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 9 (excellent condition) on the 0-9 scale.
- It was built in 2021, making it 4 years old at the 2025 inventory.
- It carries about 130 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 69 of the 213 inventoried bridges in Bonneville County rated good (32.4%); 3 (1.4%) 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 November 2024, on a 48-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (43.52542, -112.09078)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 9 | 9 | Excellent condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 9 | 9 | Excellent condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 74 ft |
| Location | 2.4 N 2.8 W Idaho Falls |
| NBI structure number | 000000000031251 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 48 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 Bonneville County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 20 over Porter Canal | 1966 | 38,000 | Fair |
| US 20 Ebl & Wbl over Snake R.;johns Hole Br. | 1966 | 38,000 | Fair |
| US 20 over Sma 7096;RIVERSIDE Dr.ic | 1969 | 38,000 | Fair |
| US 20 over Sage Canal | 1970 | 34,500 | Fair |
| US 20 over UPRR | 1966 | 32,000 | Fair |
| US 20 Wbl & Ebl over Sma 7076;LINDSAY Blvd.ic | 1966 | 32,000 | Fair |
All bridges nearby: Bonneville County, ID bridge conditions · every bridge in Bonneville County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.