The Karisaka Tunnel is a Japanese toll tunnel that opened April 23, 1998 between

Chichibu is a city located in Saitama Prefecture, Japan. , the city had an estimated population of 61,159 in 26,380 households and a population density of . The total area of the city is . Geography Chichibu is in the westernmost part of Saitama. Unlik ...

Saitama Prefecture is a Landlocked country, landlocked Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Saitama Prefecture has a population of 7,338,536 (January 1, 2020) and has a geographic area of 3,797 Square kilometre, km2 ( ...

and Yamanashi City,

Yamanashi Prefecture is a prefecture of Japan located in the Chūbu region of Honshu. Yamanashi Prefecture has a population of 787,592 (1 February 2025) and has a geographic area of 4,465 km2 (1,724 sq mi). Yamanashi Prefecture borders Saitama Prefecture to the n ...

. Until this tunnel opened, there was no direct road connection between Saitama and Yamanashi prefectures.]

Details

* At 6,625m long, the tunnel is the List of long tunnels by type#Road, fifth-longest road tunnel in Japan. * Tolls are collected when traveling north from Yamanashi to Saitama. * Equipped with fire-prevention equipment * Built using the

New Austrian Tunneling method The new Austrian tunneling method (NATM), also known as the sequential excavation method (SEM) or sprayed concrete lining method (SCL), is a method of modern tunnel design and construction employing sophisticated monitoring to optimize various wa ...

* Pedestrians, bicycles, and specialized small vehicles are prohibited. * 50cc motorbikes can be ridden through the tunnel. * Hazardous cargo is restricted.

References

External links

* * Roads in Saitama Prefecture Roads in Yamanashi Prefecture Toll tunnels in Japan Toll roads in Japan Tunnels completed in 1998 Tunnels in Saitama Prefecture Tunnels in Yamanashi Prefecture Yamanashi, Yamanashi {{Japan-road-stub