Part of Southeast Louisiana has been placed under a dense fog advisory until 9 a.m. Monday, the National Weather Service said.
The advisory includes New Orleans metro, the north shore and Baton Rouge.
Visibility could drop to a quarter mile or less in dense fog, creating potentially hazardous driving conditions, forecasters said.
Drivers should use their low beams, slow down and leave plenty of space between vehicles.
No restrictions were listed on the Causeway's website as of 6:45 a.m.
Parishes in advisory
The advisory was in effect for the following parishes until 9 a.m.:
- Orleans
- Jefferson
- St. Tammany
- St. Charles
- West Baton Rouge
- East Baton Rouge
- Ascension
- Iberville
- Assumption
- Pointe Coupee
- Tangipahoa
- Livingston