IRR - US 191 over Alkali Creek
FairPhillips County, Montana · 7M SW Malta · Structure no. P00061149+03931
- Built
- 1994
- 31 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 183 ft
- 3 main spans
- Daily traffic
- 456
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - US 191 over Alkali Creek is a prestressed concrete stringer/multi-beam or girder carrying IRR - US 191 over Alkali Creek in Phillips County, Montana. It was built in 1994, so it is 31 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 456 vehicles a day, roughly 8% of them trucks, projected to reach 479 by 2043. The structure is 183 ft (55.8 m) long and 38 ft wide. If it were closed, the detour would be 90.7 mi (146 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 IRR - US 191 over Alkali Creek built?
It was built in 1994, making it 31 years old in 2025.
What condition is IRR - US 191 over Alkali Creek 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 March 2024.
How much traffic does IRR - US 191 over Alkali Creek carry?
About 456 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is IRR - US 191 over Alkali Creek?
The structure is 183 ft (55.8 m) long with a longest span of 75 ft (22.9 m) and a deck 38 ft wide.
Who owns IRR - US 191 over Alkali Creek?
It is owned by the State Highway Agency.