J-28 / 170th ST over Tarkio Creek
Poor Condition70 years old60 vehicles/day
Location
| State | Iowa |
| County | Page |
| Location | 069381101 |
| Carries | J-28 / 170th ST |
| Crosses | Tarkio Creek |
| Coordinates | 40.80031, -95.18133 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 178.1 ft (54.3 m) |
| Max Span | 67.9 ft (20.7 m) |
| Deck Width | 22.0 ft (6.7 m) |
| Deck Area | 363.8 sq m |
| Main Spans | 3 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 60 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2022 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000266960 |