Fdr 606 over Birch CR
PoorBeaverhead County, Montana · Birch CR · Structure no. 010201000000094
- Built
- 1954
- 71 years old
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 25 ft
- 1 main span
- Daily traffic
- 40
- Owner
- Federal
- U.S. Forest Service
About this bridge
Fdr 606 over Birch CR is a wood or timber stringer/multi-beam or girder carrying Fdr 606 over Birch CR in Beaverhead County, Montana. It was built in 1954, so it is 71 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 40 vehicles a day, projected to reach 60 by 2045. The structure is 25 ft (7.5 m) long and 15 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Fdr 606 over Birch CR built?
It was built in 1954, making it 71 years old in 2025.
What condition is Fdr 606 over Birch CR in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does Fdr 606 over Birch CR carry?
About 40 vehicles per day (latest count).
How long is Fdr 606 over Birch CR?
The structure is 25 ft (7.5 m) long with a longest span of 23 ft (7 m) and a deck 15 ft wide.
Who owns Fdr 606 over Birch CR?
It is owned by the U.S. Forest Service.