Old Darby RD over Sleeping Child Creek 075
FairRavalli County, Montana · 6M S Hamilton · Structure no. L41600005+01001
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected August 2023
- Type
- Culvert
- Steel
- Length
- 33 ft
- 1 main span
- Daily traffic
- 200
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Old Darby RD over Sleeping Child Creek 075 is a steel culvert carrying Old Darby RD over Sleeping Child Creek 075 in Ravalli County, Montana. It was built in 1972, so it is 53 years old, older 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 200 vehicles a day, projected to reach 227 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 9.9 mi (16 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Darby RD over Sleeping Child Creek 075 built?
It was built in 1972, making it 53 years old in 2025.
What condition is Old Darby RD over Sleeping Child Creek 075 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 August 2023.
How much traffic does Old Darby RD over Sleeping Child Creek 075 carry?
About 200 vehicles per day (2023 count).
How long is Old Darby RD over Sleeping Child Creek 075?
The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m).
Who owns Old Darby RD over Sleeping Child Creek 075?
It is owned by the County Highway Agency.