C44 570TH St over Rock Creek
Cherokee County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- C44 570TH St over Rock Creek in Cherokee County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 120 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 86 of the 244 inventoried bridges in Cherokee County rated good (35.2%); 68 (27.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (42.69181, -95.68131)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 101 ft |
| Location | 091412201 |
| NBI structure number | 000000000108412 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Cherokee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 59 over Railroad Creek | 1973 | 7,200 | Fair |
| US 59 over Westcott Pk Loop | 1972 | 4,510 | Fair |
| US 59 over Little Sioux River | 1973 | 4,510 | Fair |
| W Bluff St over Railroad Creek | 1961 | 3,529 | Poor |
| Ia 3 over Fork Little Sioux River | 1979 | 3,410 | Fair |
| Ia 3 over Maple River | 1985 | 3,270 | Fair |
All bridges nearby: Cherokee County, IA bridge conditions · every bridge in Cherokee County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.