County Rd 423 over Bear CR
Marion County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Rd 423 over Bear CR in Marion County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2017, making it 8 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 100 of the 186 inventoried bridges in Marion County rated fair (53.8%); 17 (9.1%) are rated poor.
- 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 → (39.70972, -91.48083)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Concrete multiple box beam |
| Length | about 84 ft |
| Location | S 29 T 57 N R 5 W |
| NBI structure number | 35408 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Marion County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 61 S over Minnow CR | 1930 | 29,762 | Fair |
| US 24 E over Drain Dtch | 1928 | 19,835 | Fair |
| US 24 E over BNSF RR | 1992 | 19,828 | Good |
| Is 72 E over Rp US61S to IS72E Rp Is | 2000 | 19,756 | Good |
| US 61 S over James CR | 1930 | 19,001 | Fair |
| Is 72 E over Mississippi Rvr Cst 410 | 2000 | 17,638 | Poor |
All bridges nearby: Marion County, MO bridge conditions · every bridge in Marion County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.