South County Line over Small CR
Clay County, Missouri · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- South County Line over Small CR in Clay County, Missouri, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1921, making it 104 years old at the 2025 inventory.
- It carries about 225 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 32 of the 444 inventoried bridges in Clay County rated poor (7.2%); 32 (7.2%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Status change: newly closed since 2024.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (39.45137, -94.60086)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 30 ft |
| Location | S 34 T 54 N R 33 W |
| NBI structure number | 15728 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Clay County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 29 S over Cst Levee Rd Missouri | 2010 | 108,151 | Fair |
| Is 29 S over Cst 14TH Ave BNSF RR | 1953 | 108,151 | Fair |
| Is 435 S over Drain Dtch | 1967 | 81,653 | Fair |
| Is 435 S over Cst N Levee Rd Missou | 1972 | 81,653 | Fair |
| Is 435 S over Mill CR | 1969 | 76,557 | Fair |
| Is 35 S over Lit Shoal CR | 1953 | 66,486 | Fair |
All bridges nearby: Clay County, MO bridge conditions · every bridge in Clay County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.