RD 763 over Fisher River
FairLincoln County, Montana · Fisher River · Structure no. 011406000000170
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 144 ft
- 2 main spans
- Daily traffic
- 40
- Owner
- Federal
- U.S. Forest Service
About this bridge
RD 763 over Fisher River is a prestressed concrete stringer/multi-beam or girder carrying RD 763 over Fisher River in Lincoln 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 144 ft (43.9 m) long and 31 ft wide. If it were closed, the detour would be 98.2 mi (158 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 | 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 RD 763 over Fisher River built?
It was built in 1977, making it 48 years old in 2025.
What condition is RD 763 over Fisher 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 RD 763 over Fisher River carry?
About 40 vehicles per day (latest count).
How long is RD 763 over Fisher River?
The structure is 144 ft (43.9 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.
Who owns RD 763 over Fisher River?
It is owned by the U.S. Forest Service and maintained by the Private (other than railroad).