Local over Dd #171 No Lizard Ck
Pocahontas County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Local over Dd #171 No Lizard Ck in Pocahontas County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1985, making it 40 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 107 of the 198 inventoried bridges in Pocahontas County rated fair (54.0%); 50 (25.3%) 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 October 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (42.67428, -94.46196)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 116 ft |
| Location | 091312501 |
| NBI structure number | 000000000278581 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| 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 Pocahontas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 4 over Lizard Creek | 1968 | 3,750 | Good |
| 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 |
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.