Marquis RD over Shell Rock Riv Overflow
Poor Condition34 years old207 vehicles/day
Location
| State | Iowa |
| County | Black Hawk |
| Location | 90-14-04-07-10 |
| Carries | Marquis RD |
| Crosses | Shell Rock Riv Overflow |
| Coordinates | 42.64223, -92.49704 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 57.1 ft (17.4 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 16.7 ft (5.1 m) |
| Deck Area | 88.7 sq m |
| Main Spans | 3 |
| Year Built | 1992 |
Traffic
| Avg Daily Traffic | 207 (2022) |
| Truck Traffic | 7% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000076741 |