I 90 over Black Foot River
GoodMissoula County, Montana · 0.6 M West Bonner · Structure no. 000000202001435
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 468 ft
- 3 main spans
- Daily traffic
- 6,216
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Black Foot River is a steel continuous stringer/multi-beam or girder carrying I 90 over Black Foot River in Missoula County, Montana. It was built in 2019, so it is 6 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 6,216 vehicles a day, roughly 19% of them trucks, projected to reach 6,526 by 2043. The structure is 468 ft (142.7 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Black Foot River built?
It was built in 2019, making it 6 years old in 2025.
What condition is I 90 over Black Foot River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.
How much traffic does I 90 over Black Foot River carry?
About 6,216 vehicles per day (2023 count), of which roughly 19% are trucks.
How long is I 90 over Black Foot River?
The structure is 468 ft (142.7 m) long with a longest span of 210 ft (64 m) and a deck 40 ft wide.
Who owns I 90 over Black Foot River?
It is owned by the State Highway Agency.