Loc 400th ST over Maquoketa River
Good Condition40 years old157 vehicles/day
Location
| State | Iowa |
| County | Delaware |
| Location | 090060501 |
| Carries | Loc 400th ST |
| Crosses | Maquoketa River |
| Coordinates | 42.64403, -91.57960 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 164.0 ft (50 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 33.1 ft (10.1 m) |
| Deck Area | 505 sq m |
| Main Spans | 3 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 157 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000142731 |