Banks Grade over N. Fk. Payette River
GoodBoise County, Idaho · At Banks · Structure no. 000000000026630
- Built
- 1957
- 68 years old
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Concrete Continuous
- Length
- 129 ft
- 3 main spans
- Daily traffic
- 350
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Banks Grade over N. Fk. Payette River is a concrete continuous stringer/multi-beam or girder carrying Banks Grade over N. Fk. Payette River in Boise County, Idaho. It was built in 1957, so it is 68 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 350 vehicles a day, roughly 3% of them trucks, projected to reach 525 by 2042. The structure is 129 ft (39.3 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Banks Grade over N. Fk. Payette River built?
It was built in 1957, making it 68 years old in 2025.
What condition is Banks Grade over N. Fk. Payette River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.
How much traffic does Banks Grade over N. Fk. Payette River carry?
About 350 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Banks Grade over N. Fk. Payette River?
The structure is 129 ft (39.3 m) long with a longest span of 84 ft (25.6 m) and a deck 20 ft wide.
Who owns Banks Grade over N. Fk. Payette River?
It is owned by the County Highway Agency.