Bridge conditions in Shannon County, Missouri
64 inventoried bridges · 7 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 9 bridges in Shannon County is rated in poor condition: 7 of 64 on the federal inventory, one of the higher shares in Missouri.
- 7 of the 64 bridges in Shannon County, Missouri, are rated in poor condition (10.9%) in the 2025 National Bridge Inventory, as of .
- 17 bridges (26.6%) are rated good and 40 (62.5%) fair.
- The median Shannon County bridge was built in 1958.
- The busiest poor-rated bridge is Rt Jj S over Castro Valley (built 1959), carrying about 929 vehicles a day.
Good 26.6% · Fair 62.5% · Poor 10.9% of 64 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 |
|---|---|---|---|
| Rt Jj S over Castro Valley | 1959 | 929 | Poor |
| Mo 106 E over Spring Valley CR | 1941 | 871 | Poor |
| Mo 19 S over Hurricane CR | 1937 | 687 | Poor |
| Mo 19 S over Rnd Sprgcav Rd Prk Sp | 1930 | 597 | Poor |
| Mo 106 E over Jacks Fork | 1940 | 452 | Poor |
| Mo 99 S over Spring CR | 1934 | 451 | Poor |
| County Rd 568 over Pike CR | 1950 | 10 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 60 E over Birch CR | 1967 | 6,107 | Fair |
| US 60 E over Hurricane CR | 1967 | 5,568 | Fair |
| US 60 E over Seamam CR | 1967 | 4,202 | Fair |
| US 60 E over Deep Pond Hollow | 1978 | 4,202 | Fair |
| US 60 W over Jam UP CR | 2008 | 3,807 | Good |
| US 60 E over Jam UP CR | 2011 | 3,617 | Good |
| Mo 19 S over Pike CR | 1931 | 3,511 | Fair |
| US 60 W over Windes CR | 2007 | 2,761 | Fair |
| Mo 99 S over Birch Br | 1934 | 2,240 | Fair |
| US 60 E over Windes CR | 1978 | 2,227 | 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.