Baltimore County Bridge Report Card
Baltimore County scores 79 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Baltimore County, Maryland
Baltimore County has 910 bridges in the National Bridge Inventory, with 54 rated poor and 10 rated scour-critical. Its poor-condition share of 5.9% is above the 4.6% statewide average. Poor-condition bridges carry about 919,022 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Baltimore County a Bridge Condition Exposure Score of 79/100 (C). The county has 910 bridges in the National Bridge Inventory, including 54 in poor condition and 10 rated scour-critical. Poor-condition bridges carry about 919,022 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 | 5.9% | 11.9 |
| Poor-condition traffic exposure | 25 | 4.8% of measured traffic | 3.6 |
| Scour-critical bridge share | 20 | 1.1% | 2.2 |
| Average age vs national baseline | 10 | 57 years vs 48 nationally | 3.7 |
| Traffic-data completeness | 5 | 19,308,195 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 | 5.9% |
| State Poor-Condition Share | 4.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.1% |
| Average Bridge Age | 57 years |
| Poor-Condition Traffic Exposure | 919,022 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Baltimore County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Radecke Avenue over Moores Run | Poor condition + traffic exposure | Poor | 10,737 | 1930 |
| Remington Avenue over Stoney Run | Poor condition + traffic exposure | Poor | 4,280 | 1900 |
| I-83 over Csx Mta Amtrak And Nor | Poor condition + traffic exposure | Poor | 127,291 | 1959 |
| I-83 over Jones Falls (mi. 7.1 To | Poor condition + traffic exposure | Poor | 105,600 | 1959 |
| Perring PKWY Ramp over Herring Run | Poor condition + traffic exposure | Poor | 75,220 | 1965 |
| Russell Street Via over Ostend Street And Csx | Poor condition + traffic exposure | Poor | 70,700 | 1951 |
| Pulaski Highway over Herring Run | Poor condition + traffic exposure | Poor | 58,858 | 1921 |
| Russell Street over Csx | Poor condition + traffic exposure | Poor | 46,276 | 1963 |
| I-83 over Mta Light Rail | Poor condition + traffic exposure | Poor | 29,900 | 1962 |
| Hanover Street over Csx | Poor condition + traffic exposure | Poor | 28,030 | 1929 |
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.