I 90 over Cove Irrigation Ditch
GoodStillwater County, Montana · 6.2M W Park City · Structure no. I00090419+08771
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected March 2024
- Type
- Culvert
- Steel
- Length
- 20 ft
- 1 main span
- Daily traffic
- 12,321
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Cove Irrigation Ditch is a steel culvert carrying I 90 over Cove Irrigation Ditch in Stillwater County, Montana. It was built in 1970, so it is 55 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 12,321 vehicles a day, roughly 20% of them trucks, projected to reach 13,430 by 2043. The structure is 20 ft (6.1 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Cove Irrigation Ditch built?
It was built in 1970, making it 55 years old in 2025.
What condition is I 90 over Cove Irrigation Ditch 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 March 2024.
How much traffic does I 90 over Cove Irrigation Ditch carry?
About 12,321 vehicles per day (2023 count), of which roughly 20% are trucks.
How long is I 90 over Cove Irrigation Ditch?
The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).
Who owns I 90 over Cove Irrigation Ditch?
It is owned by the State Highway Agency.