320th Street over Middle Tarkio Creek
Poor Condition73 years old15 vehicles/day
Location
| State | Iowa |
| County | Page |
| Location | 067392705 |
| Carries | 320th Street |
| Crosses | Middle Tarkio Creek |
| Coordinates | 40.58239, -95.30780 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 0 (Failed) |
| Superstructure | 0 (Failed) |
| Substructure | 0 (Failed) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 78.1 ft (23.8 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 18.0 ft (5.5 m) |
| Deck Area | 130.9 sq m |
| Main Spans | 3 |
| Year Built | 1953 (reconstructed 1989) |
Traffic
| Avg Daily Traffic | 15 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2022 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000265180 |