IRR - US 2 over Milk River
PoorBlaine County, Montana · Fort Belknap Agency · Structure no. P00001427+09391
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 214 ft
- 3 main spans
- Daily traffic
- 3,311
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - US 2 over Milk River is a prestressed concrete stringer/multi-beam or girder carrying IRR - US 2 over Milk River in Blaine County, Montana. It was built in 1964, so it is 61 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 3,311 vehicles a day, roughly 4% of them trucks, projected to reach 3,477 by 2043. The structure is 214 ft (65.2 m) long and 32 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| 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 2 over Milk River built?
It was built in 1964, making it 61 years old in 2025.
What condition is IRR - US 2 over Milk River 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 October 2023.
How much traffic does IRR - US 2 over Milk River carry?
About 3,311 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is IRR - US 2 over Milk River?
The structure is 214 ft (65.2 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.
Who owns IRR - US 2 over Milk River?
It is owned by the State Highway Agency.