US 87 over Judith River
FairJudith Basin County, Montana · 1M N Hobson · Structure no. P00057058+02611
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 208 ft
- 3 main spans
- Daily traffic
- 2,650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 87 over Judith River is a prestressed concrete stringer/multi-beam or girder carrying US 87 over Judith River in Judith Basin County, Montana. It was built in 1971, so it is 54 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 2,650 vehicles a day, roughly 18% of them trucks, projected to reach 2,783 by 2043. The structure is 208 ft (63.4 m) long and 46 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 87 over Judith River built?
It was built in 1971, making it 54 years old in 2025.
What condition is US 87 over Judith 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 January 2025.
How much traffic does US 87 over Judith River carry?
About 2,650 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is US 87 over Judith River?
The structure is 208 ft (63.4 m) long with a longest span of 72 ft (21.9 m) and a deck 46 ft wide.
Who owns US 87 over Judith River?
It is owned by the State Highway Agency.