170th Lane over Allen Creek
Fair Condition57 years old11 vehicles/day
Location
| State | Iowa |
| County | Harrison |
| Location | 080430507 |
| Carries | 170th Lane |
| Crosses | Allen Creek |
| Coordinates | 41.76223, -95.86842 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 4 (Poor) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 33.1 ft (10.1 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 21.3 ft (6.5 m) |
| Deck Area | 65.7 sq m |
| Main Spans | 1 |
| Year Built | 1969 (reconstructed 1988) |
Traffic
| Avg Daily Traffic | 11 (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 | 000000000178730 |