Old US 87 over E Fork Pryor Creek 174
FairYellowstone County, Montana · 9M SE Billings · Structure no. L56791009+00001
- Built
- 1926
- 99 years old
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 55 ft
- 3 main spans
- Daily traffic
- 564
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Old US 87 over E Fork Pryor Creek 174 is a steel stringer/multi-beam or girder carrying Old US 87 over E Fork Pryor Creek 174 in Yellowstone County, Montana. It was built in 1926, so it is 99 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 5 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 564 vehicles a day, roughly 2% of them trucks, projected to reach 592 by 2043. The structure is 55 ft (16.8 m) long and 26 ft wide. If it were closed, the detour would be 57.8 mi (93 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Old US 87 over E Fork Pryor Creek 174 built?
It was built in 1926, making it 99 years old in 2025.
What condition is Old US 87 over E Fork Pryor Creek 174 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 December 2024.
How much traffic does Old US 87 over E Fork Pryor Creek 174 carry?
About 564 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is Old US 87 over E Fork Pryor Creek 174?
The structure is 55 ft (16.8 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.
Who owns Old US 87 over E Fork Pryor Creek 174?
It is owned by the State Highway Agency.