The latest traffic development in Northwest Louisiana could see motorists experiencing somewhat lengthy delays for the course of the weekend. In an advisory from the Louisiana Department of Transportation and Development we learn that beginning today, Friday, September 20, there will be intermittent closures on I-49 in both the northbound and southbound directions north of Shreveport in the Mooringsport area of Caddo Parish to allow SWEPCO to move a transmission line across the interstate.