I 15 Sbl over Snake River;blackfoot Br
FairBingham County, Idaho · 1.9 N. Blackfoot · Structure no. 000000000011491
- Built
- 2002
- 23 years old
- Condition
- Fair
- inspected September 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 831 ft
- 7 main spans
- Daily traffic
- 13,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 Sbl over Snake River;blackfoot Br is a prestressed concrete continuous stringer/multi-beam or girder carrying I 15 Sbl over Snake River;blackfoot Br in Bingham County, Idaho. It was built in 2002, so it is 23 years old, younger 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 6 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 13,000 vehicles a day, roughly 19% of them trucks, projected to reach 19,500 by 2042. The structure is 831 ft (253.3 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 15 Sbl over Snake River;blackfoot Br built?
It was built in 2002, making it 23 years old in 2025.
What condition is I 15 Sbl over Snake River;blackfoot Br 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 September 2022.
How much traffic does I 15 Sbl over Snake River;blackfoot Br carry?
About 13,000 vehicles per day (2023 count), of which roughly 19% are trucks.
How long is I 15 Sbl over Snake River;blackfoot Br?
The structure is 831 ft (253.3 m) long with a longest span of 118 ft (36 m) and a deck 43 ft wide.
Who owns I 15 Sbl over Snake River;blackfoot Br?
It is owned by the State Highway Agency.