Washington County Bridge Report Card
Washington County scores 61 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Washington County, Missouri
Washington County has 156 bridges in the National Bridge Inventory, with 17 rated poor and 4 rated scour-critical. Its poor-condition share of 10.9% is above the 8.8% statewide average. Poor-condition bridges carry about 17,032 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Washington County a Bridge Condition Exposure Score of 61/100 (D). The county has 156 bridges in the National Bridge Inventory, including 17 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 17,032 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 10.9% | 21.8 |
| Poor-condition traffic exposure | 25 | 10.5% of measured traffic | 7.9 |
| Scour-critical bridge share | 20 | 2.6% | 5.1 |
| Average age vs national baseline | 10 | 59 years vs 48 nationally | 4.3 |
| Traffic-data completeness | 5 | 161,580 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 10.9% |
| State Poor-Condition Share | 8.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.6% |
| Average Bridge Age | 59 years |
| Poor-Condition Traffic Exposure | 17,032 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Washington County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Goose Creek RD over Indian CR | Poor condition + traffic exposure | Poor | 40 | 1990 |
| Delbridge RD over Clear CR | Poor condition + traffic exposure | Poor | 35 | 1955 |
| Fourche Renault RD over Little Fourche Ren | Poor condition + traffic exposure | Poor | 35 | 1965 |
| Floyd Tower RD over Fourche Renault CR | Poor condition + traffic exposure | Poor | 25 | 1960 |
| Mo 8 E over Up Rr | Poor condition + traffic exposure | Poor | 6,462 | 1968 |
| Mo 8 E over N Fk Fourche-a-ren | Poor condition + traffic exposure | Poor | 3,815 | 1965 |
| Mo 47 S over Mill CR | Poor condition + traffic exposure | Poor | 3,312 | 1964 |
| RT U S over Wallen CR | Poor condition + traffic exposure | Poor | 1,124 | 1956 |
| Mo 185 S over Millers Swan Br | Poor condition + traffic exposure | Poor | 706 | 1961 |
| RT C E over Big Rvr | Poor condition + traffic exposure | Poor | 668 | 1934 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.