Valanchery Bypass or Valanchery Viaduct is a part of NH 66 that bypasses of Valanchery city in Malappuram metropolitan area in Kerala, India. The busy 5.91 km long bypass starts at Old CI office near Vattapara Hairpin Turn in the south to Valanchery in the north, via Kattipparutti, Mukkilapeedika in Valanchery city.