SH 55 over UPRR
GoodCanyon County, Idaho · In Nampa · Structure no. 000000000014722
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected February 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 96 ft
- 1 main span
- Daily traffic
- 49,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 55 over UPRR is a prestressed concrete stringer/multi-beam or girder carrying SH 55 over UPRR in Canyon County, Idaho. It was built in 2006, so it is 19 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 49,000 vehicles a day, roughly 3% of them trucks, projected to reach 73,500 by 2042. The structure is 96 ft (29.3 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 55 over UPRR built?
It was built in 2006, making it 19 years old in 2025.
What condition is SH 55 over UPRR 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 February 2022.
How much traffic does SH 55 over UPRR carry?
About 49,000 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is SH 55 over UPRR?
The structure is 96 ft (29.3 m) long with a longest span of 93 ft (28.3 m) and a deck 90 ft wide.
Who owns SH 55 over UPRR?
It is owned by the State Highway Agency.