I 90 over Int Nissler
FairSilver Bow County, Montana · 1.2M W Rocker · Structure no. I00090219+01692
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 293 ft
- 4 main spans
- Daily traffic
- 7,361
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Int Nissler is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int Nissler in Silver Bow County, Montana. It was built in 1968, so it is 57 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 7,361 vehicles a day, roughly 15% of them trucks, projected to reach 7,728 by 2043. The structure is 293 ft (89.3 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Int Nissler built?
It was built in 1968, making it 57 years old in 2025.
What condition is I 90 over Int Nissler 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 2024.
How much traffic does I 90 over Int Nissler carry?
About 7,361 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is I 90 over Int Nissler?
The structure is 293 ft (89.3 m) long with a longest span of 97 ft (29.7 m) and a deck 41 ft wide.
Who owns I 90 over Int Nissler?
It is owned by the State Highway Agency.