Bridge conditions in Shelby County, Missouri
106 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 10 bridges in Shelby County is rated in poor condition: 11 of 106 on the federal inventory, one of the higher shares in Missouri.
- 11 of the 106 bridges in Shelby County, Missouri, are rated in poor condition (10.4%) in the 2025 National Bridge Inventory, as of .
- 32 bridges (30.2%) are rated good and 63 (59.4%) fair.
- The median Shelby County bridge was built in 1995.
- The busiest poor-rated bridge is Mo 151 S over Salt Rvr (built 1948), carrying about 293 vehicles a day.
Good 30.2% · Fair 59.4% · Poor 10.4% of 106 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.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mo 151 S over Salt Rvr | 1948 | 293 | Poor |
| Rt J E over Tiger Fk | 1956 | 192 | Poor |
| County Rd 345 over Salt Rvr | 1920 | 50 | Poor |
| County Rd 478 over Black CR | 1910 | 35 | Poor |
| County Rd 518 over Branch | 1930 | 35 | Poor |
| County Rd 267 over Tiger Br | 1910 | 25 | Poor |
| County Rd 371 over Creek | 1910 | 25 | Poor |
| County Rd 149 over Messner Br of Salt | 1910 | 15 | Poor |
| County Rd 413 over Creek | 1920 | 15 | Poor |
| County Rd 139 over Branch | 1930 | 10 | Poor |
| County Rd 166 over S Fabius Rvr | 1900 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 36 E over Br of Crooked CR | 1957 | 8,098 | Fair |
| US 36 E over Brush CR | 2007 | 7,990 | Fair |
| US 36 W over Crooked CR | 2007 | 5,289 | Good |
| US 36 W over Rt Ff | 2007 | 5,098 | Good |
| US 36 W over N Fk Salt Rvr | 1978 | 3,988 | Fair |
| US 36 E over North Fk Salt Rvr | 2007 | 3,911 | Good |
| Mo 15 S over US 36 | 2002 | 3,905 | Good |
| Mo 15 S over Black CR | 2016 | 1,834 | Good |
| Mo 15 S over Salt Rvr | 1986 | 1,617 | Fair |
| Mo 15 S over Drain Dtch | 1927 | 1,486 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
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.