St. John the Baptist County Bridge Report Card

St. John the Baptist County scores 85 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B85 / 100

Local infrastructure snapshot

St. John the Baptist County, Louisiana

St. John the Baptist County has 40 bridges in the National Bridge Inventory, with 1 rated poor and 2 rated scour-critical. Its poor-condition share of 2.5% is at or below the 11.2% statewide average.

40Total Bridges

1Poor (2.5%)

26Fair (65.0%)

2Scour-Critical

Quote-Ready Local Facts

2.5%of county bridges are in poor condition, compared with 11.2% statewide and 6.7% nationally.

0daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 5.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives St. John the Baptist County a Bridge Condition Exposure Score of 85/100 (B). The county has 40 bridges in the National Bridge Inventory, including 1 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 0 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	2.5%	5.0
Poor-condition traffic exposure	25	0.0% of measured traffic	0.0
Scour-critical bridge share	20	5.0%	10.0
Average age vs national baseline	10	47 years vs 48 nationally	0.0
Traffic-data completeness	5	644,592 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	2.5%
State Poor-Condition Share	11.2%
National Poor-Condition Share	6.7%
County Scour-Critical Share	5.0%
Average Bridge Age	47 years
Poor-Condition Traffic Exposure	0 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeHope Canal RD over Hope Canal — 0 vehicles/day Oldest Listed BridgeOld US 51 over Drain Pipe Xing — built in 1960 All County BridgesBrowse every bridge record in St. John the Baptist County.

Top Bridges to Watch in St. John the Baptist County

Bridge	Reason	Condition	Daily Traffic	Year Built
Hope Canal RD over Hope Canal	Poor condition	Poor	0	1965
Fairway Drive over Canal	Scour-critical foundation rating	Good	3,191	2017
I0010 over US 51 & Swamps	High traffic	Fair	48,723	1972
I0010 over Reserve Relief Canal	High traffic	Fair	44,074	1974
I0010 over Hope Canal	High traffic	Fair	44,074	1975
I0010 over Mississippi Bayou	High traffic	Fair	44,074	1975
I0055 over Swamp	High traffic	Good	28,021	1975
I0010 over Reserve Relief Canal	High traffic	Good	27,551	1974
I0010 over Hope Canal	High traffic	Fair	27,551	1975
I0010 over Mississippi Bayou	High traffic	Fair	27,551	1975

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.