Csah 21 over Little Cobb River
Fair Condition48 years old34 vehicles/day
Location
| State | Minnesota |
| County | Blue Earth |
| Location | 0.4 Mi E Of Jct Csah 53 |
| Carries | Csah 21 |
| Crosses | Little Cobb River |
| Coordinates | 43.96404, -93.78097 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 71.9 ft (21.9 m) |
| Max Span | 14.1 ft (4.3 m) |
| Deck Area | 186.2 sq m |
| Main Spans | 4 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 34 (2021) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 93307 |