Lower Canal RD over Fly Creek 143
FairYellowstone County, Montana · 2M SW Pompey`s Pillar · Structure no. L56110003+01001
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected April 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 66 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Lower Canal RD over Fly Creek 143 is a prestressed concrete tee beam carrying Lower Canal RD over Fly Creek 143 in Yellowstone County, Montana. It was built in 1983, so it is 42 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 66 ft (20.1 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Lower Canal RD over Fly Creek 143 built?
It was built in 1983, making it 42 years old in 2025.
What condition is Lower Canal RD over Fly Creek 143 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 2023.
How much traffic does Lower Canal RD over Fly Creek 143 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Lower Canal RD over Fly Creek 143?
The structure is 66 ft (20.1 m) long with a longest span of 65 ft (19.8 m) and a deck 26 ft wide.
Who owns Lower Canal RD over Fly Creek 143?
It is owned by the County Highway Agency.