Mn 30 over Big Cobb River
Good Condition68 years old443 vehicles/day
Location
| State | Minnesota |
| County | Blue Earth |
| Location | 5.2 Mi SE Of Mapleton |
| Carries | Mn 30 |
| Crosses | Big Cobb River |
| Coordinates | 43.89887, -93.87068 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 93.2 ft (28.4 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 409.0 sq m |
| Main Spans | 3 |
| Year Built | 1958 |
Traffic
| Avg Daily Traffic | 443 (2022) |
| Truck Traffic | 29% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 9393 |