Duck Lake RD over Dry Fork Milk River
FairGlacier County, Montana · 12M SE Babb · Structure no. S00464023+09171
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 93 ft
- 2 main spans
- Daily traffic
- 866
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Duck Lake RD over Dry Fork Milk River is a prestressed concrete stringer/multi-beam or girder carrying Duck Lake RD over Dry Fork Milk River in Glacier County, Montana. It was built in 1977, so it is 48 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 866 vehicles a day, roughly 3% of them trucks, projected to reach 909 by 2043. The structure is 93 ft (28.3 m) long and 36 ft wide. If it were closed, the detour would be 75.8 mi (122 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Duck Lake RD over Dry Fork Milk River built?
It was built in 1977, making it 48 years old in 2025.
What condition is Duck Lake RD over Dry Fork Milk River 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 September 2023.
How much traffic does Duck Lake RD over Dry Fork Milk River carry?
About 866 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Duck Lake RD over Dry Fork Milk River?
The structure is 93 ft (28.3 m) long with a longest span of 46 ft (13.9 m) and a deck 36 ft wide.
Who owns Duck Lake RD over Dry Fork Milk River?
It is owned by the State Highway Agency.