I 90 over Mission Creek
FairPark County, Montana · 9.9M E Livingston · Structure no. I00090343+02022
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 118 ft
- 3 main spans
- Daily traffic
- 5,766
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Mission Creek is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Mission Creek in Park County, Montana. It was built in 1959, so it is 66 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 5,766 vehicles a day, roughly 19% of them trucks, projected to reach 6,284 by 2043. The structure is 118 ft (36 m) long and 47 ft wide. If it were closed, the detour would be 29.8 mi (48 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. |
| 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 Mission Creek built?
It was built in 1959, making it 66 years old in 2025.
What condition is I 90 over Mission Creek 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 October 2024.
How much traffic does I 90 over Mission Creek carry?
About 5,766 vehicles per day (2023 count), of which roughly 19% are trucks.
How long is I 90 over Mission Creek?
The structure is 118 ft (36 m) long with a longest span of 47 ft (14.3 m) and a deck 47 ft wide.
Who owns I 90 over Mission Creek?
It is owned by the State Highway Agency.