Bridge conditions in Maries County, Missouri
69 inventoried bridges · 10 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Maries County has 10 bridges rated poor out of 69 inventoried, a 14.5% share that puts it well above the national rate of about 7%.
- 10 of the 69 bridges in Maries County, Missouri, are rated in poor condition (14.5%) in the 2025 National Bridge Inventory, as of .
- 22 bridges (31.9%) are rated good and 37 (53.6%) fair.
- The median Maries County bridge was built in 1970.
- The busiest poor-rated bridge is Mo 42 E over Fly CR (built 1962), carrying about 457 vehicles a day.
Good 31.9% · Fair 53.6% · Poor 14.5% of 69 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 42 E over Fly CR | 1962 | 457 | Poor |
| Mo 42 E over Maries Rvr | 1963 | 457 | Poor |
| Mo 42 E over Gasconade Rvr | 1970 | 455 | Poor |
| Rt M E over Buck Elk CR | 1935 | 371 | Poor |
| Rt Aa S over Little Maries Rvr | 1966 | 360 | Poor |
| Rt Aa S over Maries Rvr | 1966 | 360 | Poor |
| County Rd 213 over Fly CR | 1940 | 100 | Poor |
| County Rd 519 over Spring CR | 1930 | 45 | Poor |
| County Rd 614 over Maries Rvr | 1940 | 40 | Poor |
| County Rd 405 over Br of Lower Peavin | 1940 | 40 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 63 S over Gasconade Rvr | 1978 | 5,331 | Fair |
| Mo 68 E over Coppedge CR | 1975 | 2,868 | Fair |
| Mo 68 E over Coppedge Br | 1976 | 2,868 | Fair |
| Mo 28 E over Dry Fk CR | 2023 | 2,276 | Good |
| Mo 68 E over Lanes CR Fk | 1976 | 1,940 | Fair |
| Mo 28 E over Dry Fk CR | 2012 | 1,313 | Good |
| Mo 28 E over CR | 1926 | 948 | Fair |
| Mo 133 S over Carnes Br | 2005 | 789 | Good |
| Rt H S over Lit Bourbeuse CR | 1986 | 664 | Good |
| Rt H S over School House CR | 1937 | 664 | 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.