4th LN NE over Greenfield Canal 044
FairTeton County, Montana · 5M NE Fairfield · Structure no. L50216001+00001
- Built
- 1982
- 43 years old, rebuilt 1997
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 61 ft
- 2 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
4th LN NE over Greenfield Canal 044 is a wood or timber stringer/multi-beam or girder carrying 4th LN NE over Greenfield Canal 044 in Teton County, Montana. It was built in 1982 and reconstructed in 1997, so it is 43 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 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 61 ft (18.7 m) long and 20 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 4th LN NE over Greenfield Canal 044 built?
It was built in 1982, making it 43 years old in 2025. It was reconstructed in 1997.
What condition is 4th LN NE over Greenfield Canal 044 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 4th LN NE over Greenfield Canal 044 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is 4th LN NE over Greenfield Canal 044?
The structure is 61 ft (18.7 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.
Who owns 4th LN NE over Greenfield Canal 044?
It is owned by the County Highway Agency.