LA 9 Truck is an undivided two-lane highway for its entire length. The portion that is concurrent with US 79 Bypass is classified as a rural minor arterial by the Louisiana Department of Transportation and Development (La DOTD). The remainder of the route is classified as a rural major collector. The average daily traffic volume in 2013 was reported as ranging between 2,100 and 2,900 vehicles. The posted speed limit is generally on the north–south segment and on the east–west segment.