Secondary 78 over East Rosebud Creek
GoodCarbon County, Montana · 6 Miles South of Absaroke · Structure no. 000000201906183
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 330 ft
- 2 main spans
- Daily traffic
- 661
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Secondary 78 over East Rosebud Creek is a steel continuous stringer/multi-beam or girder carrying Secondary 78 over East Rosebud Creek in Carbon County, Montana. It was built in 2019, so it is 6 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 661 vehicles a day, roughly 3% of them trucks, projected to reach 694 by 2043. The structure is 330 ft (100.6 m) long and 39 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 Secondary 78 over East Rosebud Creek built?
It was built in 2019, making it 6 years old in 2025.
What condition is Secondary 78 over East Rosebud 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 September 2023.
How much traffic does Secondary 78 over East Rosebud Creek carry?
About 661 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Secondary 78 over East Rosebud Creek?
The structure is 330 ft (100.6 m) long with a longest span of 180 ft (54.9 m) and a deck 39 ft wide.
Who owns Secondary 78 over East Rosebud Creek?
It is owned by the State Highway Agency.