NW 128th ST NB over Walnut Creek
Good Condition19 years old6,875 vehicles/day
Location
| State | Iowa |
| County | Polk |
| Location | 079253200 |
| Carries | NW 128th ST NB |
| Crosses | Walnut Creek |
| Coordinates | 41.61263, -93.79296 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 247.4 ft (75.4 m) |
| Max Span | 82.0 ft (25 m) |
| Deck Width | 41.0 ft (12.5 m) |
| Deck Area | 942.5 sq m |
| Main Spans | 3 |
| Year Built | 2007 |
Traffic
| Avg Daily Traffic | 6,875 (2021) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000504850 |