County Road 811 over Ten Mile Creek 131
FairLewis and Clark County, Montana · W Edge of Helena · Structure no. L25811000+01001
- Built
- 2005
- 20 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 27 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 811 over Ten Mile Creek 131 is a steel stringer/multi-beam or girder carrying County Road 811 over Ten Mile Creek 131 in Lewis and Clark County, Montana. It was built in 2005, so it is 20 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 27 ft (8.1 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road 811 over Ten Mile Creek 131 built?
It was built in 2005, making it 20 years old in 2025.
What condition is County Road 811 over Ten Mile Creek 131 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does County Road 811 over Ten Mile Creek 131 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is County Road 811 over Ten Mile Creek 131?
The structure is 27 ft (8.1 m) long with a longest span of 25 ft (7.7 m) and a deck 24 ft wide.
Who owns County Road 811 over Ten Mile Creek 131?
It is owned by the County Highway Agency.