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 .

The route includes the Karisaka Tunnel, first opened in 1998 and at  is the fifth-longest road tunnel in Japan.Because it is the main road connecting Saitama and Yamanashi, both prefectures are developing the Nishikanto Road.

See also

References

140
Roads in Saitama Prefecture
Roads in Yamanashi Prefecture