I 15 Sbl over Fort Hall Main Canal
FairBannock County, Idaho · 9.8 N. Pocatello · Structure no. 000000000011340
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 112 ft
- 3 main spans
- Daily traffic
- 14,250
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 Sbl over Fort Hall Main Canal is a prestressed concrete stringer/multi-beam or girder carrying I 15 Sbl over Fort Hall Main Canal in Bannock County, Idaho. It was built in 1960, so it is 65 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 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 14,250 vehicles a day, roughly 18% of them trucks, projected to reach 21,375 by 2042. The structure is 112 ft (34.1 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 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 Fort Hall Main Canal built?
It was built in 1960, making it 65 years old in 2025.
What condition is I 15 Sbl over Fort Hall Main Canal 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 March 2024.
How much traffic does I 15 Sbl over Fort Hall Main Canal carry?
About 14,250 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is I 15 Sbl over Fort Hall Main Canal?
The structure is 112 ft (34.1 m) long with a longest span of 49 ft (14.9 m) and a deck 40 ft wide.
Who owns I 15 Sbl over Fort Hall Main Canal?
It is owned by the State Highway Agency.