Route 139 is a state highway in Jersey City, New Jersey in the United States that heads east from the Pulaski Skyway over Tonnele Circle to the state line with New Jersey and New York in the Holland Tunnel, which is under the Hudson River, to New York City. The western portion of the route is a two level highway that is charted by the New Jersey Department of Transportation as two separate roadways: The 1.45-mile (2.33 km) lower roadway (Route 139) between U.S. Route 1/9 (US 1/9) over Tonnele Circle and Interstate 78 (I-78) at Jersey Avenue, and the 0.83-mile (1.34 km) upper roadway (Route 139U or Hoboken Avenue) running from County Route 501 (John F. Kennedy Boulevard) and ending where it joins the lower highway as part of the 12th Street Viaduct, which ends at Jersey Avenue. The lower ro