4500 East over Harrison Canal
FairJefferson County, Idaho · 0.9 N. 1.4 W. Ririe · Structure no. 000000000032375
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected March 2024
- Type
- Channel Beam
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 70
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
4500 East over Harrison Canal is a prestressed concrete channel beam carrying 4500 East over Harrison Canal in Jefferson County, Idaho. It was built in 1971, so it is 54 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 70 vehicles a day, roughly 10% of them trucks, projected to reach 105 by 2039. The structure is 40 ft (12.2 m) long and 25 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 | 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 4500 East over Harrison Canal built?
It was built in 1971, making it 54 years old in 2025.
What condition is 4500 East over Harrison 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 4500 East over Harrison Canal carry?
About 70 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is 4500 East over Harrison Canal?
The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 25 ft wide.
Who owns 4500 East over Harrison Canal?
It is owned by the County Highway Agency.