Ia 3 over Stream
Plymouth County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia 3 over Stream in Plymouth 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 1994, making it 31 years old at the 2025 inventory.
- It carries about 3,820 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 233 of the 430 inventoried bridges in Plymouth County rated good (54.2%); 90 (20.9%) 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 → (42.80837, -95.99685)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 27 ft |
| Location | 0.9 mi. W of Jct. SR L12 |
| NBI structure number | 000000000039881 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Plymouth County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 75 over Stream | 1999 | 18,200 | Fair |
| US 75 over Stream | 2019 | 14,900 | Good |
| US 75 over Stream | 2019 | 14,900 | Good |
| US 75 over Stream | 2019 | 14,900 | Good |
| US 75 over Stream | 2019 | 14,900 | Good |
| US 75 over Stream | 1926 | 14,000 | Poor |
All bridges nearby: Plymouth County, IA bridge conditions · every bridge in Plymouth County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.