US 287 over Int Augusta I 15
FairLewis and Clark County, Montana · 1M NE Wolf Creek · Structure no. P00009000+00001
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 195 ft
- 3 main spans
- Daily traffic
- 564
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 287 over Int Augusta I 15 is a steel continuous stringer/multi-beam or girder carrying US 287 over Int Augusta I 15 in Lewis and Clark County, Montana. It was built in 1966, 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 5 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 564 vehicles a day, roughly 8% of them trucks, projected to reach 592 by 2043. The structure is 195 ft (59.5 m) long and 31 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 287 over Int Augusta I 15 built?
It was built in 1966, making it 59 years old in 2025.
What condition is US 287 over Int Augusta I 15 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 287 over Int Augusta I 15 carry?
About 564 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 287 over Int Augusta I 15?
The structure is 195 ft (59.5 m) long with a longest span of 89 ft (27.2 m) and a deck 31 ft wide.
Who owns US 287 over Int Augusta I 15?
It is owned by the State Highway Agency.