I 15 over Silverbow Creek-Rr
GoodSilver Bow County, Montana · 1.2M W Butte · Structure no. 000000000001106
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 598 ft
- 4 main spans
- Daily traffic
- 7,379
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 over Silverbow Creek-Rr is a steel continuous stringer/multi-beam or girder carrying I 15 over Silverbow Creek-Rr in Silver Bow County, Montana. It was built in 2018, so it is 7 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 7,379 vehicles a day, roughly 15% of them trucks, projected to reach 7,747 by 2043. The structure is 598 ft (182.3 m) long and 40 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| 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 I 15 over Silverbow Creek-Rr built?
It was built in 2018, making it 7 years old in 2025.
What condition is I 15 over Silverbow Creek-Rr 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 August 2024.
How much traffic does I 15 over Silverbow Creek-Rr carry?
About 7,379 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is I 15 over Silverbow Creek-Rr?
The structure is 598 ft (182.3 m) long with a longest span of 165 ft (50.3 m) and a deck 40 ft wide.
Who owns I 15 over Silverbow Creek-Rr?
It is owned by the State Highway Agency.