IRR - US 212 over Tongue River
FairRosebud County, Montana · 1M W Ashland · Structure no. P00037061+04521
- Built
- 1949
- 76 years old, rebuilt 1994
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 204 ft
- 3 main spans
- Daily traffic
- 2,126
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - US 212 over Tongue River is a steel continuous stringer/multi-beam or girder carrying IRR - US 212 over Tongue River in Rosebud County, Montana. It was built in 1949 and reconstructed in 1994, so it is 76 years old, older 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 2,126 vehicles a day, roughly 24% of them trucks, projected to reach 2,243 by 2043. The structure is 204 ft (62.1 m) long and 42 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 212 over Tongue River built?
It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1994.
What condition is IRR - US 212 over Tongue 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 June 2024.
How much traffic does IRR - US 212 over Tongue River carry?
About 2,126 vehicles per day (2023 count), of which roughly 24% are trucks.
How long is IRR - US 212 over Tongue River?
The structure is 204 ft (62.1 m) long with a longest span of 77 ft (23.5 m) and a deck 42 ft wide.
Who owns IRR - US 212 over Tongue River?
It is owned by the State Highway Agency.