Csah 1 over Otter Tail River
Otter Tail County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Csah 1 over Otter Tail River in Otter Tail County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1987, making it 38 years old at the 2025 inventory.
- It carries about 1,750 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 78 of the 148 inventoried bridges in Otter Tail County rated fair (52.7%); 11 (7.4%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (46.44313, -95.59942)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Timber slab |
| Length | about 78 ft |
| Location | 1.1 Mi W of Jct Th 78 |
| NBI structure number | 56528 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Otter Tail County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 94 over Otter Tail River | 1960 | 17,300 | Fair |
| Msas 104 over Ottertail River | 2002 | 11,700 | Good |
| I 94 over Csah 88 | 1964 | 9,100 | Fair |
| Msas 104 over Otv Railroad | 1939 | 8,700 | Fair |
| US 10 over Otter Tail River | 1972 | 8,640 | Good |
| I 94 over Csah 88 | 1964 | 8,156 | Fair |
All bridges nearby: Otter Tail County, MN bridge conditions · every bridge in Otter Tail County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.