In 2009, WVDOT calculated that as few as 45,000 vehicles traveled along the highway at the Virginia state line and as many as 62,500 vehicles used the freeway between CR 15 and CR 13 in Martinsburg. As part of the Interstate Highway System, the entire route is listed on the National Highway System, a system of roads that are important to the nation's economy, defense, and mobility.
In 2009, WVDOT estimated that between 45,000 and 62,500 vehicles passed through the highway at the Virginia state line and used the freeway between CR 15 and CR 13 in Martinsburg. This route is part of the Interstate Highway System, which is listed on the National Highway System, a network of roads essential to the country's economic, defensive, and transportation infrastructure.