Mailbox RD over Bbwa Canal 087
FairYellowstone County, Montana · 7M NW Shepherd · Structure no. L56700002+01001
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 24 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Mailbox RD over Bbwa Canal 087 is a steel stringer/multi-beam or girder carrying Mailbox RD over Bbwa Canal 087 in Yellowstone County, Montana. It was built in 1967, so it is 58 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 24 ft (7.3 m) long and 27 ft wide. If it were closed, the detour would be 14.3 mi (23 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Mailbox RD over Bbwa Canal 087 built?
It was built in 1967, making it 58 years old in 2025.
What condition is Mailbox RD over Bbwa Canal 087 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.
How much traffic does Mailbox RD over Bbwa Canal 087 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Mailbox RD over Bbwa Canal 087?
The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7.1 m) and a deck 27 ft wide.
Who owns Mailbox RD over Bbwa Canal 087?
It is owned by the County Highway Agency.