Delaware County Bridge Report Card
Delaware County scores 92 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Delaware County, Ohio
Delaware County has 266 bridges in the National Bridge Inventory, with 9 rated poor and 0 rated scour-critical. Its poor-condition share of 3.4% is at or below the 4.7% statewide average. Poor-condition bridges carry about 19,170 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Delaware County a Bridge Condition Exposure Score of 92/100 (A). The county has 266 bridges in the National Bridge Inventory, including 9 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 19,170 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 | 3.4% | 6.8 |
| Poor-condition traffic exposure | 25 | 1.4% of measured traffic | 1.0 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 44 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 1,381,588 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 | 3.4% |
| State Poor-Condition Share | 4.7% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 44 years |
| Poor-Condition Traffic Exposure | 19,170 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Delaware County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| SR 257 over Ped Underpass At Zoo | Poor condition + traffic exposure | Poor | 11,179 | 1970 |
| SR 37 over Prairie Run | Poor condition + traffic exposure | Poor | 2,583 | 1960 |
| SR 37 over Harsh Ditch | Poor condition + traffic exposure | Poor | 2,583 | 1960 |
| SR 257 over Ottawa Creek | Poor condition + traffic exposure | Poor | 689 | 1961 |
| Ostrander Rd. over Scioto River | Poor condition + traffic exposure | Poor | 665 | 1968 |
| S. Washington St. over Delaware Run | Poor condition + traffic exposure | Poor | 499 | 1992 |
| Fulton Creek Rd. over Fulton Creek | Poor condition + traffic exposure | Poor | 324 | 1958 |
| Burnt Pond Rd. over Blues Creek | Poor condition + traffic exposure | Poor | 324 | 1978 |
| Tyler Rd. over Bokes Creek | Poor condition + traffic exposure | Poor | 324 | 1984 |
| I-71 SB over Alum Creek | High traffic | Good | 41,597 | 1959 |
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.