Harrison County Bridge Report Card
Harrison County scores 83 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Harrison County, Mississippi
Harrison County has 302 bridges in the National Bridge Inventory, with 17 rated poor and 6 rated scour-critical. Its poor-condition share of 5.6% is at or below the 5.8% statewide average. Poor-condition bridges carry about 51,066 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Harrison County a Bridge Condition Exposure Score of 83/100 (B). The county has 302 bridges in the National Bridge Inventory, including 17 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 51,066 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 | 5.6% | 11.3 |
| Poor-condition traffic exposure | 25 | 1.9% of measured traffic | 1.5 |
| Scour-critical bridge share | 20 | 2.0% | 4.0 |
| Average age vs national baseline | 10 | 39 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 2,627,838 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 | 5.6% |
| State Poor-Condition Share | 5.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.0% |
| Average Bridge Age | 39 years |
| Poor-Condition Traffic Exposure | 51,066 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Harrison County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Popps Ferry Road over Back Bay Biloxi | Poor condition + traffic exposure | Poor | 18,000 | 1979 |
| Cedar Lake RD over Tchoutacabouffa River | Poor condition + traffic exposure | Poor | 6,000 | 1973 |
| Old HWY 67 over Howard Creek | Poor condition + traffic exposure | Poor | 5,200 | 1960 |
| E. Wortham RD over Flat Branch | Poor condition + traffic exposure | Poor | 5,100 | 1978 |
| Fas 109 Landon RD over Taylor Creek Branch | Poor condition + traffic exposure | Poor | 4,300 | 1955 |
| Woolmarket RD over Parker Creek | Poor condition + traffic exposure | Poor | 4,000 | 1964 |
| Fas-128 Cable Brid over Wolf River | Poor condition + traffic exposure | Poor | 3,300 | 1969 |
| White Star Road over Walker Creek | Poor condition + traffic exposure | Poor | 1,295 | 1979 |
| Saucier Advance RD over Spring Branch | Poor condition + traffic exposure | Poor | 1,100 | 1968 |
| F. Taylor Road over Flat Branch | Poor condition + traffic exposure | Poor | 1,052 | 1971 |
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.