Osterdock RD over Carlan Creek
Fair Condition45 years old311 vehicles/day
Location
| State | Iowa |
| County | Clayton |
| Location | 070000505 |
| Carries | Osterdock RD |
| Crosses | Carlan Creek |
| Coordinates | 42.73351, -91.15821 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 26.9 ft (8.2 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Area | 85.3 sq m |
| Main Spans | 2 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 311 (2022) |
| Truck Traffic | 18% |
| 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 | 000000000009110 |