Upper Harb RD over Drainage 057
PoorPhillips County, Montana · 16M E Malta · Structure no. L36205005+08001
- Built
- 1950
- 75 years old
- Condition
- Poor
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 38 ft
- 2 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Upper Harb RD over Drainage 057 is a wood or timber stringer/multi-beam or girder carrying Upper Harb RD over Drainage 057 in Phillips County, Montana. It was built in 1950, so it is 75 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 4 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 38 ft (11.5 m) long and 20 ft wide. If it were closed, the detour would be 21.1 mi (34 km).
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Upper Harb RD over Drainage 057 built?
It was built in 1950, making it 75 years old in 2025.
What condition is Upper Harb RD over Drainage 057 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 April 2024.
How much traffic does Upper Harb RD over Drainage 057 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Upper Harb RD over Drainage 057?
The structure is 38 ft (11.5 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.
Who owns Upper Harb RD over Drainage 057?
It is owned by the County Highway Agency.