The Lake Pontchartrain Causeway stretches nearly 24 miles across the lake, connecting Metairie to Mandeville. It’s one of the most significant daily commute routes in Louisiana — and one of the most uniquely dangerous. There are no shoulders in most sections. Exits are miles apart. Fog settles fast and low over the water. When a Causeway accident happens, the legal situation has features that don’t apply to crashes on standard Louisiana roads — and our New Orleans car accident lawyers handle these cases regularly.
Who Has Jurisdiction Over the Causeway?
The Causeway is operated by the Greater New Orleans Expressway Commission — a state authority created by Louisiana statute. The Causeway Police Department has jurisdiction over the entire span. So, NOPD and the St. Tammany Parish Sheriff’s Office are not the responding agencies out on the bridge.
Because of this, official crash reports are filed with Causeway Police. If your attorney later needs the report, surveillance footage, or inspection records, those requests go to the Commission directly. The process is different from a standard road crash, and it matters for how your case is built.
Why Causeway Crashes Have Unique Risk Factors
- No shoulder: A disabled vehicle in the travel lane becomes an immediate hazard. Chain-reaction crashes from breakdowns are a consistent pattern on this span.
- Fog: Lake weather can drop visibility to near zero in minutes. Multi-vehicle crashes in low-visibility conditions happen regularly here.
- Wind: Cross-span wind significantly affects high-profile vehicles. Trucks and SUVs are particularly vulnerable on open sections.
- Draw spans: Brief openings near the north shore end create merge situations that generate rear-end collisions.
Additionally, the meeting point mid-span — where northbound and southbound traffic run closest together — is a location where head-on crashes can occur when a vehicle drifts.
When Fog Is a Factor: Liability Still Applies
When fog is involved, insurance companies will try to attribute the crash entirely to weather. However, weather is not a legal defense to negligence.
If a driver was traveling too fast for visibility conditions or following too closely in fog, those are independent acts of negligence. NHTSA’s traffic safety data consistently shows that weather-related crashes involve driver behavior as a contributing factor — the weather alone is rarely the sole cause.
Furthermore, the Causeway Commission has obligations to warn drivers of dangerous conditions. Whether variable speed limit signs were adjusted and whether proper fog alerts were posted are relevant questions in serious weather-related crashes on the span.
What to Do After a Causeway Crash
- Stay in your vehicle if it’s safe. The road has no shoulder in most sections, and stepping into live traffic is extremely dangerous.
- Turn on your hazard lights immediately.
- Call 911 — Causeway Police will respond.
- Don’t attempt to push or move disabled vehicles unless absolutely necessary.
- Once you’re off the bridge, get medical attention and document your injuries.
- Request a copy of the Causeway Police crash report.
- Contact an attorney before speaking to any insurer.
Frequently Asked Questions
Can I sue the Causeway Commission if their negligence contributed?
Claims against the Greater New Orleans Expressway Commission involve a government entity. Therefore, specific procedural steps apply — including providing legal notice within a set timeframe. Missing those steps can bar your claim entirely. An attorney should be involved early if the Commission’s conduct is relevant.
What if a road defect or debris on the bridge caused the crash?
The Commission is responsible for maintaining the Causeway. So, a defect or debris that the Commission knew about — or should have discovered through regular inspection — can support a claim against them. These cases require prompt investigation.
How long do I have to file in Louisiana?
Usually, you have two years to file a personal injury claim in Louisiana. However, claims against government entities often have shorter notice windows, so contact an attorney as quickly as possible.
If you were in a crash on the Causeway, call us before you deal with the other driver’s insurer or any Commission representative. The consultation is free.
