US 71 over Sin Creek
Good Condition56 years old1,390 vehicles/day
Location
| State | Iowa |
| County | Montgomery |
| Location | 4.5 Mi. S Of Jct. SR H-14 |
| Carries | US 71 |
| Crosses | Sin Creek |
| Coordinates | 41.08093, -94.98510 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 167.0 ft (50.9 m) |
| Max Span | 61.0 ft (18.6 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 733.0 sq m |
| Main Spans | 3 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 1,390 (2022) |
| Truck Traffic | 22% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000037610 |