New North Klang Straits Bypass (NNKSB) or Shapadu Highway (/ AH141) (Malay: Lebuhraya Pintas Selat Klang Utara Baru or Lebuhraya Shapadu) is an expressway in Klang, Selangor, Malaysia. The 17.5 km (10.9 mi) expressway also acts as the North Klang Straits Bypass (Federal Route 20) to avoid the accident-prone area on this road.