IRR - US 2 over Big Muddy River
FairRoosevelt County, Montana · 5M W Culbertson · Structure no. P00001639+01881
- Built
- 2012
- 13 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 289 ft
- 3 main spans
- Daily traffic
- 917
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - US 2 over Big Muddy River is a prestressed concrete stringer/multi-beam or girder carrying IRR - US 2 over Big Muddy River in Roosevelt County, Montana. It was built in 2012, so it is 13 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 917 vehicles a day, roughly 8% of them trucks, projected to reach 963 by 2043. The structure is 289 ft (88.1 m) long and 43 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 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR - US 2 over Big Muddy River built?
It was built in 2012, making it 13 years old in 2025.
What condition is IRR - US 2 over Big Muddy River 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 November 2024.
How much traffic does IRR - US 2 over Big Muddy River carry?
About 917 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is IRR - US 2 over Big Muddy River?
The structure is 289 ft (88.1 m) long with a longest span of 96 ft (29.4 m) and a deck 43 ft wide.
Who owns IRR - US 2 over Big Muddy River?
It is owned by the State Highway Agency.