Bridge conditions in Clay County, Missouri
444 inventoried bridges · 32 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Clay County tracks close to typical: 32 of its 444 inventoried bridges (7.2%) are rated poor, against a national rate of about 7%.
- 32 of the 444 bridges in Clay County, Missouri, are rated in poor condition (7.2%) in the 2025 National Bridge Inventory, as of .
- 156 bridges (35.1%) are rated good and 256 (57.7%) fair.
- The median Clay County bridge was built in 1980.
- The busiest poor-rated bridge is Is 29 N over Rp US169S to IS29S US 1 (built 1957), carrying about 57,469 vehicles a day.
Good 35.1% · Fair 57.7% · Poor 7.2% of 444 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
Busiest bridges in the 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 |
| Mo 152 E over Is 35 | 2019 | 66,123 | Good |
| Is 35 S over Mill CR | 1958 | 64,517 | Good |
| Is 35 S over Rock CR | 1956 | 64,342 | Fair |
| Mo 152 E over N Br of Big Shoal | 1995 | 60,264 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
Every bridge in Clay County → - all 444, busiest first, each with its own condition record.
All of Missouri: Missouri bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.