Louisiana Highway 4 (LA 4) is a state highway located in northern Louisiana. It runs 164.54 miles (264.80 km) in an east–west direction from U.S. Highway 71 (US 71) at to LA 605 in Newellton. The entire route parallels Interstate 20 (I-20) an average of about 20 miles (32 km) to the south. Along the way, it serves the city of Winnsboro and smaller towns such as Ringgold, Jonesboro, Chatham, Columbia, and Newellton (its eastern terminus). It also intersects many of the state's major north–south routes, such as US 71 (its western terminus), US 371, US 167, US 165, US 425, and US 65.