Bridge conditions in Washington County, Missouri
156 inventoried bridges · 17 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Washington County has 17 bridges rated poor out of 156 inventoried, a 10.9% share that puts it well above the national rate of about 7%.
- 17 of the 156 bridges in Washington County, Missouri, are rated in poor condition (10.9%) in the 2025 National Bridge Inventory, as of .
- 48 bridges (30.8%) are rated good and 91 (58.3%) fair.
- The median Washington County bridge was built in 1963.
- The busiest poor-rated bridge is Mo 8 E over UP RR (built 1968), carrying about 6,462 vehicles a day.
Good 30.8% · Fair 58.3% · Poor 10.9% of 156 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 8 E over UP RR | 1968 | 6,462 | Poor |
| Mo 8 E over N Fk Fourche-a-ren | 1965 | 3,815 | Poor |
| Mo 47 S over Mill CR | 1964 | 3,312 | Poor |
| Rt U S over Wallen CR | 1956 | 1,124 | Poor |
| Mo 185 S over Millers Swan Br | 1961 | 706 | Poor |
| Rt C E over Big Rvr | 1934 | 668 | Poor |
| Rt A E over Indian CR | 1958 | 290 | Poor |
| Missouri St over Breton CR | 1968 | 200 | Poor |
| Water St over Breton CR | 1950 | 200 | Poor |
| Goose Creek Rd over Indian CR | 1990 | 40 | Poor |
| Fourche Renault Rd over Little Fourche Ren | 1965 | 35 | Poor |
| Delbridge Rd over Clear CR | 1955 | 35 | Poor |
| Gildea Rd over Clear CR | 1950 | 35 | Poor |
| Mounts Rd over Big Rvr | 1968 | 35 | Poor |
| Old 8 A over Fourche Renault CR | 1922 | 30 | Poor |
| Floyd Tower Rd over Fourche Renault CR | 1960 | 25 | Poor |
| Dart Rd over Old Mines CR | 1950 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mo 21 S over UP RR | 1993 | 7,409 | Good |
| Mo 21 S over Old Mines CR | 1933 | 7,409 | Fair |
| Mo 8 E over Breton CR | 2002 | 6,972 | Fair |
| Mo 8 E over Br Mill CR | 1968 | 6,462 | Fair |
| Mo 8 E over UP RR | 1968 | 6,462 | Poor |
| Mo 21 S over Old Mines CR | 2006 | 5,370 | Good |
| Mo 21 S over Salt Pine CR | 1923 | 5,370 | Good |
| Mo 21 S over Br Old Mines CR | 1923 | 5,370 | Fair |
| Mo 21 S over Cannon Mine | 1932 | 5,009 | Fair |
| Mo 21 S over Big Rvr | 1988 | 4,078 | Good |
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.