SH 55 over Low Line Canal
GoodCanyon County, Idaho · 3.5 N. Marsing · Structure no. 000000000014681
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected January 2024
- Type
- Frame
- Concrete
- Length
- 26 ft
- 1 main span
- Daily traffic
- 7,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 55 over Low Line Canal is a concrete frame carrying SH 55 over Low Line Canal in Canyon County, Idaho. It was built in 2007, so it is 18 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 7,700 vehicles a day, roughly 10% of them trucks, projected to reach 11,550 by 2042. The structure is 26 ft (7.9 m) long and 150 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 55 over Low Line Canal built?
It was built in 2007, making it 18 years old in 2025.
What condition is SH 55 over Low Line Canal 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 January 2024.
How much traffic does SH 55 over Low Line Canal carry?
About 7,700 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is SH 55 over Low Line Canal?
The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 150 ft wide.
Who owns SH 55 over Low Line Canal?
It is owned by the State Highway Agency.