Japan National Route 40

National Route 40 (国道40号) is a national highway connecting Asahikawa and Wakkanai in Hokkaidō, Japan.

Route data

 * Length: 243.0 km (151.0 mi)
 * Origin: Asahikawa (originates at the terminus of 12 and the origin of 39)
 * Terminus: Wakkanai (ends at Wakkanai Station)

History

 * 1952-12-04 - First Class National Highway 40 (from Asahikawa to Wakkanai)
 * 1965-04-01 - General National Highway 40 (from Asahikawa to Wakkanai)

Overlapping sections

 * From Shibetsu (Odori East-6 intersection) to Nayoro (West-4 North-1 intersection): Route 239
 * From Bifuka (Odori Kita-3 intersection) to Otoineppu: Route 275
 * From Teshio to the terminus: Route 232