170th ST over Rock CR
Fair Condition51 years old11 vehicles/day
Location
| State | Iowa |
| County | Cedar |
| Location | 081031101 |
| Carries | 170th ST |
| Crosses | Rock CR |
| Coordinates | 41.84469, -91.16464 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 24.3 ft (7.4 m) |
| Deck Area | 54.0 sq m |
| Main Spans | 1 |
| Year Built | 1975 (reconstructed 2001) |
Traffic
| Avg Daily Traffic | 11 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000103881 |