55th East Road over North Fork Willow Creek
FairBonneville County, Idaho · 3.2 N. Iona · Structure no. 000000000031365
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 38 ft
- 1 main span
- Daily traffic
- 1,300
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
55th East Road over North Fork Willow Creek is a prestressed concrete stringer/multi-beam or girder carrying 55th East Road over North Fork Willow Creek in Bonneville County, Idaho. It was built in 1963, so it is 62 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 1,300 vehicles a day, roughly 24% of them trucks, projected to reach 1,950 by 2042. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 55th East Road over North Fork Willow Creek built?
It was built in 1963, making it 62 years old in 2025.
What condition is 55th East Road over North Fork Willow Creek 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 November 2023.
How much traffic does 55th East Road over North Fork Willow Creek carry?
About 1,300 vehicles per day (2023 count), of which roughly 24% are trucks.
How long is 55th East Road over North Fork Willow Creek?
The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 31 ft wide.
Who owns 55th East Road over North Fork Willow Creek?
It is owned by the County Highway Agency.