Japan National Route 140

National Route 140 is a national highway of Japan connecting Kumagaya, Saitama and Fujikawa, Yamanashi in Japan, with a total length of 146.6 km (91.09 mi).

National Route 140 shield

National Route 140
Route 140 in Kumagaya
Route information
Length150.4 km[1] (93.5 mi)
Major junctions
South end National Route 52 in Fujikawa, Yamanashi
North end National Route 17 / National Route 407 in Kumagaya
Highway system
National highways of Japan
Expressways of Japan
National Route 139National Route 141

The route includes the Karisaka Tunnel, first opened in 1998 and at 6.225 km (3.868 mi) is the fifth-longest road tunnel in Japan.


  1. ^ "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 19 February 2020.