Csah 20 over Clearwater River
Red Lake County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Csah 20 over Clearwater River in Red Lake County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1975, making it 50 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2014).
- Its listed owner is the county highway agency.
- It is one of 17 of the 59 inventoried bridges in Red Lake County rated fair (28.8%); 1 (1.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (47.87655, -96.07604)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 120 ft |
| Location | 1.0 Mi W of Jct CR 118 |
| NBI structure number | 63504 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Red Lake County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 32 over Clearwater River | 1941 | 4,600 | Fair |
| US 59 over Clearwater River | 2013 | 2,750 | Good |
| US 59 over Hill River | 1940 | 2,150 | Fair |
| US 59 over Lost River | 2015 | 2,150 | Fair |
| Mn 32 over Red Lake River | 2003 | 2,050 | Fair |
| Mn 32 over Cyr Creek | 1977 | 1,034 | Good |
All bridges nearby: Red Lake County, MN bridge conditions · every bridge in Red Lake County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.