Japan National Route 140
| National Route 140 | ||||
|---|---|---|---|---|
| 国道140号 | ||||
Route 140 in Kumagaya | ||||
| Route information | ||||
| Length | 150.4 km (93.5 mi) | |||
| Existed | 1953–present | |||
| Major junctions | ||||
| South end | National Route 52 in Fujikawa, Yamanashi | |||
| North end | National Route 17 / National Route 407 in Kumagaya | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
| ||||
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 (91.1 mi).
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.Because it is the main road connecting Saitama and Yamanashi, both prefectures are developing the Nishikanto Road.