Slug Creek RD over Blackfoot River
FairCaribou County, Idaho · 3.9 N. 7.3 E. Conda · Structure no. 000000000023275
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected October 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 60
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Slug Creek RD over Blackfoot River is a prestressed concrete tee beam carrying Slug Creek RD over Blackfoot River in Caribou County, Idaho. It was built in 1978, so it is 47 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 60 vehicles a day, roughly 20% of them trucks, projected to reach 90 by 2042. The structure is 50 ft (15.2 m) long and 30 ft wide. If it were closed, the detour would be 21.1 mi (34 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Slug Creek RD over Blackfoot River built?
It was built in 1978, making it 47 years old in 2025.
What condition is Slug Creek RD over Blackfoot River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.
How much traffic does Slug Creek RD over Blackfoot River carry?
About 60 vehicles per day (2023 count), of which roughly 20% are trucks.
How long is Slug Creek RD over Blackfoot River?
The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.
Who owns Slug Creek RD over Blackfoot River?
It is owned by the County Highway Agency.