305th ST over Allen Creek
Fair Condition52 years old139 vehicles/day
Location
| State | Iowa |
| County | Harrison |
| Location | 078441701 |
| Carries | 305th ST |
| Crosses | Allen Creek |
| Coordinates | 41.56469, -95.92874 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 65.9 ft (20.1 m) |
| Max Span | 65.0 ft (19.8 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 146.7 sq m |
| Main Spans | 1 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 139 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000177711 |