18 Mile Road over Eighteen Mile Creek
GoodLemhi County, Idaho · 5.6 S 4.3 E Leadore · Structure no. 000000000036165
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected July 2022
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 35 ft
- 1 main span
- Daily traffic
- 20
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
18 Mile Road over Eighteen Mile Creek is a steel stringer/multi-beam or girder carrying 18 Mile Road over Eighteen Mile Creek in Lemhi County, Idaho. It was built in 2020, so it is 5 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 20 vehicles a day, projected to reach 30 by 2040. The structure is 35 ft (10.7 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 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 18 Mile Road over Eighteen Mile Creek built?
It was built in 2020, making it 5 years old in 2025.
What condition is 18 Mile Road over Eighteen 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 July 2022.
How much traffic does 18 Mile Road over Eighteen Mile Creek carry?
About 20 vehicles per day (2023 count).
How long is 18 Mile Road over Eighteen Mile Creek?
The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 25 ft wide.
Who owns 18 Mile Road over Eighteen Mile Creek?
It is owned by the County Highway Agency.