Old HWY 312 over Bbwa Canal 166
GoodYellowstone County, Montana · 4M NE Billings · Structure no. L56788005+04001
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected December 2024
- Type
- Culvert
- Steel
- Length
- 25 ft
- 1 main span
- Daily traffic
- 11,260
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Old HWY 312 over Bbwa Canal 166 is a steel culvert carrying Old HWY 312 over Bbwa Canal 166 in Yellowstone County, Montana. It was built in 2005, so it is 20 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 11,260 vehicles a day, roughly 1% of them trucks, projected to reach 11,823 by 2043. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 13 mi (21 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 Old HWY 312 over Bbwa Canal 166 built?
It was built in 2005, making it 20 years old in 2025.
What condition is Old HWY 312 over Bbwa Canal 166 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 December 2024.
How much traffic does Old HWY 312 over Bbwa Canal 166 carry?
About 11,260 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Old HWY 312 over Bbwa Canal 166?
The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m).
Who owns Old HWY 312 over Bbwa Canal 166?
It is owned by the State Highway Agency.