US 191 over Grayling Creek
PoorGallatin County, Montana · 15M N West Yellowstone · Structure no. P00050015+01001
- Built
- 1962
- 63 years old
- Condition
- Poor
- inspected September 2024
- Type
- Culvert
- Steel
- Length
- 47 ft
- 3 main spans
- Daily traffic
- 2,605
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 191 over Grayling Creek is a steel culvert carrying US 191 over Grayling Creek in Gallatin County, Montana. It was built in 1962, so it is 63 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 2,605 vehicles a day, roughly 10% of them trucks, projected to reach 2,735 by 2043. The structure is 47 ft (14.2 m) long. 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 191 over Grayling Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is US 191 over Grayling Creek 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 September 2024.
How much traffic does US 191 over Grayling Creek carry?
About 2,605 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 191 over Grayling Creek?
The structure is 47 ft (14.2 m) long with a longest span of 12 ft (3.8 m).
Who owns US 191 over Grayling Creek?
It is owned by the State Highway Agency.