I 90 over Int Logan
GoodGallatin County, Montana · Logan · Structure no. I00090283+02652
- Built
- 1963
- 62 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 143 ft
- 3 main spans
- Daily traffic
- 9,762
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Int Logan is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int Logan in Gallatin County, Montana. It was built in 1963, so it is 62 years old, older 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 9,762 vehicles a day, roughly 12% of them trucks, projected to reach 11,031 by 2043. The structure is 143 ft (43.6 m) long and 41 ft wide.
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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Int Logan built?
It was built in 1963, making it 62 years old in 2025.
What condition is I 90 over Int Logan 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 November 2023.
How much traffic does I 90 over Int Logan carry?
About 9,762 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is I 90 over Int Logan?
The structure is 143 ft (43.6 m) long with a longest span of 52 ft (15.8 m) and a deck 41 ft wide.
Who owns I 90 over Int Logan?
It is owned by the State Highway Agency.