Petrolia Lake RD over Mcdonald Creek 014
FairPetroleum County, Montana · 6M E Winnett · Structure no. L35007000+08001
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected April 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 78 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Petrolia Lake RD over Mcdonald Creek 014 is a prestressed concrete tee beam carrying Petrolia Lake RD over Mcdonald Creek 014 in Petroleum County, Montana. It was built in 1980, so it is 45 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 78 ft (23.8 m) long and 26 ft wide. If it were closed, the detour would be 18 mi (29 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Petrolia Lake RD over Mcdonald Creek 014 built?
It was built in 1980, making it 45 years old in 2025.
What condition is Petrolia Lake RD over Mcdonald Creek 014 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 April 2024.
How much traffic does Petrolia Lake RD over Mcdonald Creek 014 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Petrolia Lake RD over Mcdonald Creek 014?
The structure is 78 ft (23.8 m) long with a longest span of 75 ft (22.9 m) and a deck 26 ft wide.
Who owns Petrolia Lake RD over Mcdonald Creek 014?
It is owned by the County Highway Agency.