St. Helena County Bridge Report Card
St. Helena County scores 57 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
St. Helena County, Louisiana
St. Helena County has 139 bridges in the National Bridge Inventory, with 12 rated poor and 24 rated scour-critical. Its poor-condition share of 8.6% is at or below the 11.2% statewide average. Poor-condition bridges carry about 12,642 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives St. Helena County a Bridge Condition Exposure Score of 57/100 (F). The county has 139 bridges in the National Bridge Inventory, including 12 in poor condition and 24 rated scour-critical. Poor-condition bridges carry about 12,642 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 | 8.6% | 17.3 |
| Poor-condition traffic exposure | 25 | 7.3% of measured traffic | 5.5 |
| Scour-critical bridge share | 20 | 17.3% | 20.0 |
| Average age vs national baseline | 10 | 46 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 173,862 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 | 8.6% |
| State Poor-Condition Share | 11.2% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 17.3% |
| Average Bridge Age | 46 years |
| Poor-Condition Traffic Exposure | 12,642 vehicles/day |
Bridges to Watch
Top Bridges to Watch in St. Helena County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| La0037 over Creek | Poor condition + traffic exposure | Poor | 2,894 | 1960 |
| La0037 over Glass Branch | Poor condition + traffic exposure | Poor | 1,781 | 1958 |
| La0037 over Glass Branch | Poor condition + traffic exposure | Poor | 1,781 | 1960 |
| La0038 over Drain | Poor condition + traffic exposure | Poor | 933 | 1954 |
| La0010-s over ST Joseph Branch | Poor condition + traffic exposure | Poor | 225 | 1959 |
| La0037 over Creek | Poor condition + traffic exposure | Poor | 1,730 | 1958 |
| La0038 over Peters Creek | Poor condition + traffic exposure | Poor | 1,535 | 1952 |
| La0038 over Darling Creek | Poor condition + traffic exposure | Poor | 933 | 1954 |
| Sawmill RD over Creek | Poor condition + traffic exposure | Poor | 700 | 1964 |
| Mclin RD over Dutchman Creek | Poor condition + traffic exposure | Poor | 70 | 1964 |
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.