County Road 290 over Helena Valley Canal 085
GoodPosted for loadLewis and Clark County, Montana · N of Helena Airport · Structure no. M25058000+00201
- Built
- 1958
- 67 years old
- Condition
- Good
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 40 ft
- 2 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 290 over Helena Valley Canal 085 is a wood or timber stringer/multi-beam or girder carrying County Road 290 over Helena Valley Canal 085 in Lewis and Clark County, Montana. It was built in 1958, so it is 67 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.
It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 40 ft (12.2 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road 290 over Helena Valley Canal 085 built?
It was built in 1958, making it 67 years old in 2025.
What condition is County Road 290 over Helena Valley Canal 085 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 2025.
How much traffic does County Road 290 over Helena Valley Canal 085 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is County Road 290 over Helena Valley Canal 085?
The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.
Who owns County Road 290 over Helena Valley Canal 085?
It is owned by the County Highway Agency.