W 46TH St over Cardinal Creek
Scott County, Iowa · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- W 46TH St over Cardinal Creek in Scott County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1900 and reconstructed in 2016, making it 125 years old at the 2025 inventory.
- It carries about 120 vehicles a day (traffic count year 2022).
- Its listed owner is a city or municipal highway agency.
- It is one of 29 of the 291 inventoried bridges in Scott County rated poor (10.0%); 29 (10.0%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (41.56725, -90.65743)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 3 | Serious condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 23 ft |
| Location | 000000000 |
| NBI structure number | 000000000003100 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Scott County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 over Mississippi River & RR | 1967 | 38,100 | Fair |
| I 74 WB over Mississippi River | 2020 | 37,650 | Good |
| WB US 6 over Goose Creek | 2011 | 35,400 | Good |
| I-80 over Drainage Ditch | 1963 | 34,600 | Fair |
| I-80 over Stream | 1963 | 34,600 | Fair |
| I-80 over Drainage Ditch | 1963 | 31,600 | Fair |
All bridges nearby: Scott County, IA bridge conditions · every bridge in Scott County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.