170th ST over Argo Slough
Fair Condition9 years old11 vehicles/day
Location
| State | Iowa |
| County | Lyon |
| Location | 99431601 |
| Carries | 170th ST |
| Crosses | Argo Slough |
| Coordinates | 43.40344, -95.92801 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 32.2 ft (9.8 m) |
| Max Span | 15.1 ft (4.6 m) |
| Deck Width | 20.0 ft (6.1 m) |
| Deck Area | 59.8 sq m |
| Main Spans | 2 |
| Year Built | 2017 |
Traffic
| Avg Daily Traffic | 11 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000229631 |