Csah 21 over Rock River
Fair Condition47 years old44 vehicles/day
Location
| State | Minnesota |
| County | Rock |
| Location | 0.3 Mi W Of Jct Csah 2 |
| Carries | Csah 21 |
| Crosses | Rock River |
| Coordinates | 43.80466, -96.12111 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Wood or Timber |
| Design | Slab |
| Total Length | 178.5 ft (54.4 m) |
| Max Span | 31.8 ft (9.7 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 565.8 sq m |
| Main Spans | 6 |
| Year Built | 1979 |
Traffic
| Avg Daily Traffic | 44 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 67510 |