Dollar Road over Trail Creek
Blaine County, Idaho · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Dollar Road over Trail Creek in Blaine County, Idaho, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1988, making it 37 years old at the 2025 inventory.
- It carries about 5,000 vehicles a day (traffic count year 2023).
- Its listed owner is a city or municipal highway agency.
- It is one of 27 of the 96 inventoried bridges in Blaine County rated good (28.1%); 4 (4.2%) 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 August 2022, 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 → (43.69167, -114.35139)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 20 ft |
| Location | In Sun Valley |
| NBI structure number | 000000000033320 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2022 |
| 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 Blaine County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 75 over Big Wood River | 2002 | 14,500 | Good |
| SH 75 over Big Wood River | 2017 | 14,500 | Fair |
| SH 75 over Bellevue Canal | 1931 | 7,000 | Fair |
| STC2815;WARM Sprng over Big Wood River | 1972 | 6,300 | Fair |
| SH 75 over Richfield Canal | 1955 | 4,500 | Fair |
| US 93 over Little Wood River | 1977 | 2,900 | Fair |
All bridges nearby: Blaine County, ID bridge conditions · every bridge in Blaine County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.