US 191 over S Fork American Fork
PoorWheatland County, Montana · 11M S Harlowton · Structure no. P00045032+08301
- Built
- 1941
- 84 years old
- Condition
- Poor
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 29 ft
- 1 main span
- Daily traffic
- 706
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 191 over S Fork American Fork is a steel stringer/multi-beam or girder carrying US 191 over S Fork American Fork in Wheatland County, Montana. It was built in 1941, so it is 84 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 706 vehicles a day, roughly 12% of them trucks, projected to reach 741 by 2043. The structure is 29 ft (8.8 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 US 191 over S Fork American Fork built?
It was built in 1941, making it 84 years old in 2025.
What condition is US 191 over S Fork American Fork in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.
How much traffic does US 191 over S Fork American Fork carry?
About 706 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is US 191 over S Fork American Fork?
The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 28 ft wide.
Who owns US 191 over S Fork American Fork?
It is owned by the State Highway Agency.