100th St. over Union Creek
Poor Condition126 years old78 vehicles/day
Location
| State | Iowa |
| County | Clinton |
| Location | 083e20101 |
| Carries | 100th St. |
| Crosses | Union Creek |
| Coordinates | 42.03280, -90.66834 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 3 (Serious) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 121.1 ft (36.9 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 21.3 ft (6.5 m) |
| Deck Area | 239.8 sq m |
| Main Spans | 1 |
| Year Built | 1900 (reconstructed 1960) |
Traffic
| Avg Daily Traffic | 78 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000124610 |