Ia 4 over Lizard Creek
Pocahontas County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia 4 over Lizard Creek in Pocahontas County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1968, making it 57 years old at the 2025 inventory.
- It carries about 3,750 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 41 of the 198 inventoried bridges in Pocahontas County rated good (20.7%); 50 (25.3%) are rated poor.
- 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 → (42.74697, -94.67886)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 35 ft |
| Location | 1.0 mi. N of Jct. IA #3 |
| NBI structure number | 000000000040210 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Pocahontas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 3 over Lizard Creek | 1968 | 3,670 | Fair |
| Ia 4 over North Lizard Creek | 1976 | 3,150 | Good |
| Ia 4 over North Lizard Creek | 1976 | 3,150 | Fair |
| Ia 4 over Drainage Ditch | 1991 | 2,420 | Fair |
| Ia 3 over Drainage Ditch 53 | 1984 | 2,390 | Good |
| Ia 3 over North Lizard Creek | 1974 | 2,390 | Fair |
All bridges nearby: Pocahontas County, IA bridge conditions · every bridge in Pocahontas County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.