Ionia Rd over S Flat CR
Benton County, Missouri · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ionia Rd over S Flat CR in Benton County, Missouri, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2011, making it 14 years old at the 2025 inventory.
- It carries about 40 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 15 of the 134 inventoried bridges in Benton County rated good (11.2%); 28 (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 → (38.50823, -93.35814)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 9 | Excellent condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 100 ft |
| Location | S 9 T 43 N R 22 W |
| NBI structure number | 33314 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Benton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 65 S over Corman CR | 1928 | 8,748 | Fair |
| US 65 S over Chubb CR | 1928 | 8,748 | Fair |
| US 65 S over Wisdom CR | 1928 | 8,579 | Fair |
| US 65 S over Osage Rvr | 1974 | 8,522 | Fair |
| Mo 7 N over US 65 | 1976 | 6,491 | Fair |
| US 65 S over Mo 83 | 1977 | 6,340 | Fair |
All bridges nearby: Benton County, MO bridge conditions · every bridge in Benton County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.