US 30 over Portneuf River
GoodBannock County, Idaho · 6.8 W. Lava Hot Springs · Structure no. 000000000013702
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected October 2021
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 346 ft
- 3 main spans
- Daily traffic
- 5,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 30 over Portneuf River is a prestressed concrete stringer/multi-beam or girder carrying US 30 over Portneuf River in Bannock County, Idaho. It was built in 2011, so it is 14 years old, younger than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 5,700 vehicles a day, roughly 24% of them trucks, projected to reach 8,550 by 2042. The structure is 346 ft (105.5 m) long and 82 ft wide. If it were closed, the detour would be 42.3 mi (68 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 30 over Portneuf River built?
It was built in 2011, making it 14 years old in 2025.
What condition is US 30 over Portneuf River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2021.
How much traffic does US 30 over Portneuf River carry?
About 5,700 vehicles per day (2023 count), of which roughly 24% are trucks.
How long is US 30 over Portneuf River?
The structure is 346 ft (105.5 m) long with a longest span of 123 ft (37.5 m) and a deck 82 ft wide.
Who owns US 30 over Portneuf River?
It is owned by the State Highway Agency.