N 4950 E over Dry Bed Snake River
FairJefferson County, Idaho · 1.0 N. 3.1 E. Ririe · Structure no. 000000000032460
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 124 ft
- 2 main spans
- Daily traffic
- 560
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
N 4950 E over Dry Bed Snake River is a prestressed concrete stringer/multi-beam or girder carrying N 4950 E over Dry Bed Snake River in Jefferson County, Idaho. It was built in 1968, so it is 57 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 560 vehicles a day, roughly 12% of them trucks, projected to reach 840 by 2042. The structure is 124 ft (37.8 m) long and 30 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 | 7 Good | Some minor problems. |
| 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 4950 E over Dry Bed Snake River built?
It was built in 1968, making it 57 years old in 2025.
What condition is N 4950 E over Dry Bed Snake River 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 4950 E over Dry Bed Snake River carry?
About 560 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is N 4950 E over Dry Bed Snake River?
The structure is 124 ft (37.8 m) long with a longest span of 62 ft (18.9 m) and a deck 30 ft wide.
Who owns N 4950 E over Dry Bed Snake River?
It is owned by the County Highway Agency.