6th LN NE over Greenfield Canal 042
FairTeton County, Montana · N Greenfield · Structure no. L50075002+08001
- Built
- 1969
- 56 years old, rebuilt 1986
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 39 ft
- 3 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
6th LN NE over Greenfield Canal 042 is a wood or timber stringer/multi-beam or girder carrying 6th LN NE over Greenfield Canal 042 in Teton County, Montana. It was built in 1969 and reconstructed in 1986, so it is 56 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 5 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 39 ft (11.8 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 6th LN NE over Greenfield Canal 042 built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1986.
What condition is 6th LN NE over Greenfield Canal 042 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 December 2023.
How much traffic does 6th LN NE over Greenfield Canal 042 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is 6th LN NE over Greenfield Canal 042?
The structure is 39 ft (11.8 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.
Who owns 6th LN NE over Greenfield Canal 042?
It is owned by the County Highway Agency.