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|---|---|---|---|---|
| 国道140号 | ||||
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 Route 140 in Kumagaya | ||||
| Route information | ||||
| Length | 150.4 km[1] (93.5 mi) | |||
| Existed | 1953–present | |||
| Major junctions | ||||
| South end |  National Route 52 inFujikawa, Yamanashi | |||
| North end |   National Route 17 /National Route 407 inKumagaya | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 140 is anational highway ofJapan connectingKumagaya, Saitama andFujikawa, Yamanashi in Japan, with a total length of 146.6 km (91.1 mi).
The route includes theKarisaka 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 theNishikanto Road.[2]
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