S 3 over North Fork Alkali Creek
GoodYellowstone County, Montana · 8M NW Billings · Structure no. P00053011+09351
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected November 2024
- Type
- Culvert
- Steel
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 2,972
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 3 over North Fork Alkali Creek is a steel culvert carrying S 3 over North Fork Alkali Creek in Yellowstone County, Montana. It was built in 1992, so it is 33 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 2,972 vehicles a day, roughly 10% of them trucks, projected to reach 3,180 by 2043. The structure is 24 ft (7.3 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 3 over North Fork Alkali Creek built?
It was built in 1992, making it 33 years old in 2025.
What condition is S 3 over North Fork Alkali 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 3 over North Fork Alkali Creek carry?
About 2,972 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is S 3 over North Fork Alkali Creek?
The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).
Who owns S 3 over North Fork Alkali Creek?
It is owned by the State Highway Agency.