Adams County Bridge Report Card
Adams County scores 44 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Adams County, Washington
Adams County has 187 bridges in the National Bridge Inventory, with 23 rated poor and 3 rated scour-critical. Its poor-condition share of 12.3% is above the 5.6% statewide average. Poor-condition bridges carry about 84,846 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Adams County a Bridge Condition Exposure Score of 44/100 (F). The county has 187 bridges in the National Bridge Inventory, including 23 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 84,846 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 | 12.3% | 24.6 |
| Poor-condition traffic exposure | 25 | 28.7% of measured traffic | 21.5 |
| Scour-critical bridge share | 20 | 1.6% | 3.2 |
| Average age vs national baseline | 10 | 65 years vs 48 nationally | 6.7 |
| Traffic-data completeness | 5 | 295,388 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 | 12.3% |
| State Poor-Condition Share | 5.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.6% |
| Average Bridge Age | 65 years |
| Poor-Condition Traffic Exposure | 84,846 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Adams County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| I-90 over Bnsf Railroad | Poor condition + traffic exposure | Poor | 10,667 | 1968 |
| I-90 over Bnsf Railroad | Poor condition + traffic exposure | Poor | 10,667 | 1968 |
| I-90 over SR 261 | Poor condition + traffic exposure | Poor | 8,405 | 1958 |
| I-90 over Damon RD | Poor condition + traffic exposure | Poor | 6,018 | 1972 |
| I-90 over Wahl RD | Poor condition + traffic exposure | Poor | 6,000 | 1972 |
| I-90 over N Paha Packard RD | Poor condition + traffic exposure | Poor | 5,950 | 1972 |
| I-90 over SR 21 | Poor condition + traffic exposure | Poor | 5,897 | 1972 |
| I-90 over SR 21 | Poor condition + traffic exposure | Poor | 5,897 | 1972 |
| SR 24 over Potholes East Canal | Poor condition + traffic exposure | Poor | 5,698 | 1976 |
| SR 24 over Sagehill Wasteway | Poor condition + traffic exposure | Poor | 4,970 | 1965 |
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.