CR 77 over Knife River
FairPosted for loadKanabec County, Minnesota · 0.2 MI E of JCT Csah 8 · Structure no. 33518
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 106 ft
- 3 main spans
- Daily traffic
- 70
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
CR 77 over Knife River is a wood or timber stringer/multi-beam or girder carrying CR 77 over Knife River in Kanabec County, Minnesota. It was built in 1973, so it is 52 years old, older than the Minnesota average of 38.5 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. Its operating status is: posted for load restriction.
It carries about 70 vehicles a day, projected to reach 70 by 2039. The structure is 106 ft (32.2 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CR 77 over Knife River built?
It was built in 1973, making it 52 years old in 2025.
What condition is CR 77 over Knife 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 November 2023.
How much traffic does CR 77 over Knife River carry?
About 70 vehicles per day (2014 count).
How long is CR 77 over Knife River?
The structure is 106 ft (32.2 m) long with a longest span of 35 ft (10.7 m) and a deck 30 ft wide.
Who owns CR 77 over Knife River?
It is owned by the County Highway Agency.