US 87 over Int Lockwood I 90
FairYellowstone County, Montana · Billings · Structure no. P00016000+00001
- Built
- 1966
- 59 years old, rebuilt 1998
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 276 ft
- 5 main spans
- Daily traffic
- 23,199
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 87 over Int Lockwood I 90 is a prestressed concrete stringer/multi-beam or girder carrying US 87 over Int Lockwood I 90 in Yellowstone County, Montana. It was built in 1966 and reconstructed in 1998, so it is 59 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 23,199 vehicles a day, roughly 4% of them trucks, projected to reach 24,359 by 2043. The structure is 276 ft (84.1 m) long and 82 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 87 over Int Lockwood I 90 built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1998.
What condition is US 87 over Int Lockwood I 90 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 April 2024.
How much traffic does US 87 over Int Lockwood I 90 carry?
About 23,199 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is US 87 over Int Lockwood I 90?
The structure is 276 ft (84.1 m) long with a longest span of 72 ft (21.9 m) and a deck 82 ft wide.
Who owns US 87 over Int Lockwood I 90?
It is owned by the State Highway Agency.