WB US 20 over Buffalo Creek
Fair Condition48 years old3,500 vehicles/day
Location
| State | Iowa |
| County | Buchanan |
| Location | 2.3 Mi. E Of Jct. SR W40 |
| Carries | WB US 20 |
| Crosses | Buffalo Creek |
| Coordinates | 42.46086, -91.70784 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 305.1 ft (93 m) |
| Max Span | 81.0 ft (24.7 m) |
| Deck Width | 43.6 ft (13.3 m) |
| Deck Area | 1236.9 sq m |
| Main Spans | 4 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 3,500 (2022) |
| Truck Traffic | 30% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000603665 |