US 77 over Missouri River & RD
Fair Condition45 years old34,600 vehicles/day
Location
| State | Iowa |
| County | Woodbury |
| Location | In Sioux City |
| Carries | US 77 |
| Crosses | Missouri River & RD |
| Coordinates | 42.48752, -96.41357 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Arch - Thru |
| Total Length | 1502.0 ft (457.8 m) |
| Max Span | 424.9 ft (129.5 m) |
| Deck Width | 67.6 ft (20.6 m) |
| Deck Area | 9430.7 sq m |
| Main Spans | 1 |
| Year Built | 1981 (reconstructed 1983) |
Traffic
| Avg Daily Traffic | 34,600 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000052811 |