Duck Lake RD over South Fork Milk River
GoodGlacier County, Montana · 16M NW Browning · Structure no. S00464016+09001
- Built
- 1987
- 38 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 71 ft
- 1 main span
- Daily traffic
- 821
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Duck Lake RD over South Fork Milk River is a prestressed concrete stringer/multi-beam or girder carrying Duck Lake RD over South Fork Milk River in Glacier County, Montana. It was built in 1987, so it is 38 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 821 vehicles a day, roughly 3% of them trucks, projected to reach 862 by 2043. The structure is 71 ft (21.6 m) long and 30 ft wide. If it were closed, the detour would be 75.8 mi (122 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 South Fork Milk River built?
It was built in 1987, making it 38 years old in 2025.
What condition is Duck Lake RD over South Fork Milk River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does Duck Lake RD over South Fork Milk River carry?
About 821 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Duck Lake RD over South Fork Milk River?
The structure is 71 ft (21.6 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.
Who owns Duck Lake RD over South Fork Milk River?
It is owned by the State Highway Agency.