Frontage Road 120 over Valley Creek 048
FairStillwater County, Montana · 1M W Park City · Structure no. L48120000+02001
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 143 ft
- 3 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
Frontage Road 120 over Valley Creek 048 is a prestressed concrete stringer/multi-beam or girder carrying Frontage Road 120 over Valley Creek 048 in Stillwater County, Montana. It was built in 1969, so it is 56 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 143 ft (43.6 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Frontage Road 120 over Valley Creek 048 built?
It was built in 1969, making it 56 years old in 2025.
What condition is Frontage Road 120 over Valley Creek 048 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 November 2023.
How much traffic does Frontage Road 120 over Valley Creek 048 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Frontage Road 120 over Valley Creek 048?
The structure is 143 ft (43.6 m) long with a longest span of 77 ft (23.5 m) and a deck 30 ft wide.
Who owns Frontage Road 120 over Valley Creek 048?
It is owned by the State Highway Agency.