Olive Ave over Br South Walnut Creek
Jefferson County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Olive Ave over Br South Walnut Creek in Jefferson County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2016, making it 9 years old at the 2025 inventory.
- It carries about 15 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 70 of the 156 inventoried bridges in Jefferson County rated good (44.9%); 31 (19.9%) 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 → (41.08334, -91.90119)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 22 ft |
| Location | 073093307 |
| NBI structure number | 000000000202331 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Jefferson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 34 EB over BNSF RR | 2008 | 7,800 | Good |
| US 34 WB over BNSF RR | 2008 | 7,800 | Good |
| US 34 over Mitchell Creek | 2009 | 4,360 | Good |
| Ia 1 over Crow Creek | 1928 | 4,100 | Fair |
| US 34 EB over Big Cedar Creek | 2016 | 3,900 | Fair |
| US 34 WB over Big Cedar Creek | 2006 | 3,900 | Good |
All bridges nearby: Jefferson County, IA bridge conditions · every bridge in Jefferson County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.