Durham County Bridge Report Card
Durham County scores 90 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Durham County, North Carolina
Durham County has 310 bridges in the National Bridge Inventory, with 10 rated poor and 2 rated scour-critical. Its poor-condition share of 3.2% is at or below the 7.1% statewide average. Poor-condition bridges carry about 157,400 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Durham County a Bridge Condition Exposure Score of 90/100 (A). The county has 310 bridges in the National Bridge Inventory, including 10 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 157,400 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 | 3.2% | 6.5 |
| Poor-condition traffic exposure | 25 | 2.6% of measured traffic | 1.9 |
| Scour-critical bridge share | 20 | 0.6% | 1.3 |
| Average age vs national baseline | 10 | 41 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 6,079,430 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 | 3.2% |
| State Poor-Condition Share | 7.1% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.6% |
| Average Bridge Age | 41 years |
| Poor-Condition Traffic Exposure | 157,400 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Durham County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Sr1110 over Little Creek | Poor condition + traffic exposure | Poor | 13,000 | 1979 |
| Us15/us501nbl over Sr1308 | Poor condition + traffic exposure | Poor | 51,000 | 1956 |
| Us501 over Eno River | Poor condition + traffic exposure | Poor | 30,000 | 1967 |
| I85nbl Us15n over Neuse River/falls Lake | Poor condition + traffic exposure | Poor | 21,250 | 1969 |
| I85s Us15s over Neuse River/falls Lake | Poor condition + traffic exposure | Poor | 21,250 | 1969 |
| Sr1969 over Stirrup Iron Creek | Poor condition + traffic exposure | Poor | 6,600 | 1980 |
| Sr1303 over Sandy Creek Overflow | Poor condition + traffic exposure | Poor | 6,400 | 1981 |
| Pettigrew Street over Campus Drive | Poor condition + traffic exposure | Poor | 4,000 | 1950 |
| Sr1103 over Crooked Creek | Poor condition + traffic exposure | Poor | 2,000 | 1953 |
| Sr1811 over Chunky Pipe Creek | Poor condition + traffic exposure | Poor | 1,900 | 1980 |
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.