N 4500 E over Dry Bed Canal
FairJefferson County, Idaho · 3.2 N. 1.5 W. Ririe · Structure no. 000000000032480
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected March 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 114 ft
- 2 main spans
- Daily traffic
- 430
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
N 4500 E over Dry Bed Canal is a prestressed concrete tee beam carrying N 4500 E over Dry Bed Canal in Jefferson County, Idaho. It was built in 1970, so it is 55 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 430 vehicles a day, roughly 10% of them trucks, projected to reach 645 by 2042. The structure is 114 ft (34.7 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 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 N 4500 E over Dry Bed Canal built?
It was built in 1970, making it 55 years old in 2025.
What condition is N 4500 E over Dry Bed 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 N 4500 E over Dry Bed Canal carry?
About 430 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is N 4500 E over Dry Bed Canal?
The structure is 114 ft (34.7 m) long with a longest span of 55 ft (16.9 m) and a deck 28 ft wide.
Who owns N 4500 E over Dry Bed Canal?
It is owned by the County Highway Agency.