Japan National Route 140
Route 140 in Kumagaya
|Length||150.4 km (93.5 mi)|
|South end||National Route 52 in Fujikawa, Yamanashi|
|North end||National Route 17 / National Route 407 in Kumagaya|
|National highways of Japan|
Expressways of Japan
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.
- "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.
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