| Karisaka Tunnel | |
| Location: | Saitama Prefecture Yamanashi Prefecture |
| Route: | Japan National Route 140 |
| Status: | In service |
| Start: | Chichibu, Saitama Prefecture |
| End: | Yamanashi City, Yamanashi Prefecture |
| Startwork: | October, 1988 |
| Opened: | April, 1998 |
| Traffic: | Automobiles Motorbikes |
| Toll: | Passenger cars： 710 yen Mid-sized cars：860 yen Heavy vehicles： 1,170 yen Oversized vehicles：1,980 yen Light motor vehicles (up to 660cc)： 560 yen Motorbikes： 70yen |
| Construction: | September, 1994 |
| Length: | 6,625m |
| Speed: | Not specified. Speed limit: 40km/h Mopeds: 30km/h |
| Width: | 7.5m |
The Karisaka Tunnel is a Japanese toll tunnel that opened April 23, 1998 between Chichibu, Saitama Prefecture and Yamanashi City, Yamanashi Prefecture. Until this tunnel opened, there was no direct road connection between Saitama and Yamanashi prefectures.
| Timeline | ||
|---|---|---|
| 1953 | Plan announced | |
| 1968 | Surveying began in Saitama and Yamanashi | |
| October 1984 | The route was approved | |
| November 1988 | Construction began in Yamanashi | |
| May 1989 | Groundbreaking was held in Yamanashi | |
| November 1990 | Construction began in Saitama | |
| September 1994 | Breakthrough | |
| April 23, 1998 | Opening | |
| October 1998 | Deregulation of large-vehicle traffic | |