High Risk 🌉 Bridge / Critical Crossing  ·  Louisiana

Lake Pontchartrain Causeway LA

CRITICAL INFRASTRUCTURE RISK PROFILE  ·  LOUISIANA

7 / 10
Risk Score
Facility Type
🌉 Bridge / Critical Crossing
Primary Risk Radius
24
mile zone
Secondary Risk Radius
72
mile zone

// Risk Intelligence

Risk Score7 / 10   High
Facility Type🌉 Bridge / Critical Crossing
Operator / BranchCauseway Commission
Host CountySt. Tammany Parish LA
Nearest CityWashington DC
Primary Risk Radius24 miles
Secondary Risk Radius72 miles

// Strategic Significance

The Lake Pontchartrain Causeway is the longest bridge over water in the world at 24 miles and is the primary north-south evacuation route from New Orleans across Lake Pontchartrain. It is critical to New Orleans hurricane evacuation. Katrina 2005 damaged the causeway requiring weeks of repair.

// Civilian Impact Assessment

New Orleans metro evacuation depends on the Causeway as the primary northbound route. A damaged or closed Causeway forces evacuation traffic onto I-10 creating massive congestion. Katrina 2005 demonstrated this vulnerability.

// Evacuation & Shelter Guidance

I-10, US-190, Causeway Boulevard. St. Tammany Parish Emergency Management coordinates hurricane evacuation protocols.

// Counties Within Risk Zone

St. Tammany Parish LA
Hurricane / Flooding
8/10
High
Jefferson Parish LA
Hurricane / Storm Surge
9/10
Critical

// Cities Within Risk Zone

Metairie LA
Hurricane / Storm Surge / Flooding
9/10
High