Csah 21 over Stream
Washington County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Csah 21 over Stream in Washington County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1980, making it 45 years old at the 2025 inventory.
- It carries about 1,277 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 61 of the 113 inventoried bridges in Washington County rated fair (54.0%); 4 (3.5%) 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 October 2024, on a 24-month routine inspection cycle.
- 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 → (44.8, -92.8063)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete tee beam |
| Length | about 78 ft |
| Location | 3.4 Mi S of Jct Csah 20 |
| NBI structure number | 82509 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 494 over Mississippi R; UP RR | 2008 | 51,236 | Good |
| I 494 over Mississippi R; UP RR | 2003 | 51,236 | Fair |
| I 694 over I 94; Collector Roads | 2020 | 45,534 | Good |
| I 494 over Csah 25 (century Ave) | 1960 | 45,500 | Fair |
| I 694 over I 94; Collector Roads | 2019 | 43,894 | Good |
| I 94 over Th 95 | 1982 | 43,000 | Fair |
All bridges nearby: Washington County, MN bridge conditions · every bridge in Washington County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.