S 78 over Beaver Creek
GoodStillwater County, Montana · 2M NE Absarokee · Structure no. P00078034+09111
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 90 ft
- 1 main span
- Daily traffic
- 2,376
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 78 over Beaver Creek is a prestressed concrete stringer/multi-beam or girder carrying S 78 over Beaver Creek in Stillwater County, Montana. It was built in 2010, so it is 15 years old, younger 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 2,376 vehicles a day, roughly 6% of them trucks, projected to reach 2,542 by 2043. The structure is 90 ft (27.3 m) long and 42 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 78 over Beaver Creek built?
It was built in 2010, making it 15 years old in 2025.
What condition is S 78 over Beaver Creek 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 2024.
How much traffic does S 78 over Beaver Creek carry?
About 2,376 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is S 78 over Beaver Creek?
The structure is 90 ft (27.3 m) long with a longest span of 90 ft (27.3 m) and a deck 42 ft wide.
Who owns S 78 over Beaver Creek?
It is owned by the State Highway Agency.