As blizzard conditions move through south Louisiana and bitterly cold temperatures are expected at night this week, major roadways could stay closed into Thursday.

On Tuesday afternoon, Louisiana State Police reported a state trooper was rear-ended by an alleged impaired driver, while stopped at a red light. The driver, who police say shouldn't have been on the road in the first place, was arrested for driving while intoxicated. The trooper involved in the accident was unharmed.

Due to extreme winter weather conditions, Louisiana State Police are urging residents and visitors to avoid all unnecessary travel due. However, if you must travel, there are some things to keep in mind to stay safe on the roads.

New warning is being issued to motorists in northwest Louisiana -- icy road conditions are causing lots of vehicle crashes in areas where there is snow.