E. Sublette Road over Portneuf Marsh Val.Cnl
PoorBannock County, Idaho · 1.2 N. 0.5 E. Arimo · Structure no. 000000000022025
- Built
- 1968
- 57 years old
- Condition
- Poor
- inspected April 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 27 ft
- 1 main span
- Daily traffic
- 50
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
E. Sublette Road over Portneuf Marsh Val.Cnl is a prestressed concrete tee beam carrying E. Sublette Road over Portneuf Marsh Val.Cnl in Bannock 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2039. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was E. Sublette Road over Portneuf Marsh Val.Cnl built?
It was built in 1968, making it 57 years old in 2025.
What condition is E. Sublette Road over Portneuf Marsh Val.Cnl in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.
How much traffic does E. Sublette Road over Portneuf Marsh Val.Cnl carry?
About 50 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is E. Sublette Road over Portneuf Marsh Val.Cnl?
The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 24 ft wide.
Who owns E. Sublette Road over Portneuf Marsh Val.Cnl?
It is owned by the County Highway Agency.