NB US 61 over Silver Creek
Fair Condition52 years old6,350 vehicles/day
Location
| State | Iowa |
| County | Clinton |
| Location | 0.9 Mi. N Of N Jct US 30 |
| Carries | NB US 61 |
| Crosses | Silver Creek |
| Coordinates | 41.83884, -90.56873 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 209.0 ft (63.7 m) |
| Max Span | 73.2 ft (22.3 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 840.8 sq m |
| Main Spans | 3 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 6,350 (2022) |
| Truck Traffic | 16% |
| 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 | 000000000602840 |