Canyon Ferry RD over Helena Valley Canal
GoodLewis and Clark County, Montana · 9M NE East Helena · Structure no. S00284004+07001
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 57 ft
- 1 main span
- Daily traffic
- 1,589
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Canyon Ferry RD over Helena Valley Canal is a prestressed concrete stringer/multi-beam or girder carrying Canyon Ferry RD over Helena Valley Canal in Lewis and Clark County, Montana. It was built in 2010, so it is 15 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,589 vehicles a day, roughly 1% of them trucks, projected to reach 1,668 by 2043. The structure is 57 ft (17.5 m) long and 41 ft wide. If it were closed, the detour would be 65.2 mi (105 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Canyon Ferry RD over Helena Valley Canal built?
It was built in 2010, making it 15 years old in 2025.
What condition is Canyon Ferry RD over Helena Valley 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 April 2024.
How much traffic does Canyon Ferry RD over Helena Valley Canal carry?
About 1,589 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Canyon Ferry RD over Helena Valley Canal?
The structure is 57 ft (17.5 m) long with a longest span of 54 ft (16.5 m) and a deck 41 ft wide.
Who owns Canyon Ferry RD over Helena Valley Canal?
It is owned by the State Highway Agency.