Quebec Route 257

Route 257 is a north–south highway on the south shore of the St. Lawrence River, in the Eastern Townships region of Quebec, Canada. Its northern terminus is in Saint-Adrien at a junction with Route 216, and its southern terminus is at the Pittsburg–Chartierville Border Crossing, where it becomes U.S. Route 3 as it enters Pittsburg, New Hampshire.

Towns along Route 257

 * Saint-Adrien
 * Ham-Sud
 * Weedon
 * Lingwick
 * Scotstown
 * La Patrie
 * Chartierville