Csah 46 over Platte River
FairMorrison County, Minnesota · 2.1 MI E of JCT Csah 45 · Structure no. 49517
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 96 ft
- 3 main spans
- Daily traffic
- 740
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 46 over Platte River is a wood or timber stringer/multi-beam or girder carrying Csah 46 over Platte River in Morrison County, Minnesota. It was built in 1970, so it is 55 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 5 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 740 vehicles a day, roughly 5% of them trucks, projected to reach 840 by 2040. The structure is 96 ft (29.4 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Csah 46 over Platte River built?
It was built in 1970, making it 55 years old in 2025.
What condition is Csah 46 over Platte 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 October 2024.
How much traffic does Csah 46 over Platte River carry?
About 740 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Csah 46 over Platte River?
The structure is 96 ft (29.4 m) long with a longest span of 32 ft (9.8 m) and a deck 38 ft wide.
Who owns Csah 46 over Platte River?
It is owned by the County Highway Agency.