Twenty Mile CR RD over Twenty Mile Creek
GoodBoundary County, Idaho · 7.0 S 3.0 W Bonners Ferr · Structure no. 000000000030357
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 40 ft
- 1 main span
- Daily traffic
- 130
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Twenty Mile CR RD over Twenty Mile Creek is a steel stringer/multi-beam or girder carrying Twenty Mile CR RD over Twenty Mile Creek in Boundary County, Idaho. It was built in 2007, so it is 18 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 130 vehicles a day, roughly 30% of them trucks, projected to reach 195 by 2042. The structure is 40 ft (12.2 m) long and 25 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Twenty Mile CR RD over Twenty Mile Creek built?
It was built in 2007, making it 18 years old in 2025.
What condition is Twenty Mile CR RD over Twenty Mile Creek 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 August 2023.
How much traffic does Twenty Mile CR RD over Twenty Mile Creek carry?
About 130 vehicles per day (2023 count), of which roughly 30% are trucks.
How long is Twenty Mile CR RD over Twenty Mile Creek?
The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 25 ft wide.
Who owns Twenty Mile CR RD over Twenty Mile Creek?
It is owned by the County Highway Agency.