Shiga Kogen is a high-altitude area where the weather changes quickly. Even on routes that are normally open to traffic, sudden closures may occur due to freezing or snowfall depending on weather conditions. Please be sure to check the weather forecast and traffic restrictions in advance whenever possible.
National Route R292 “Shiga-Kusatsu Kogen Route”
▼ LOCATION
Shiga-Kusatsu Kogen Route（From Shiga Kogen Yosaka Gate to Kusatsu Tenguyama Gate）
▼ CURRENT STATUS
CLOSED due to icy condition (Issued at 18:00, on 4 November 2026/End date TBA)
INQUIRY: Gunma Pref. Nakanojo Doboku Office (TEL: 0279-75-3047) or Nagano Pref. Hokushin Kensetsu Office (TEL: 0269-22-3111)
ROAD CONDITION WEB CAMERA：http://hokushin.pref-nagano-roadcamera.jp/
▼ 2026-2027 WINTER CLOSURE
13:00 on 11 November 2026 – 10:00 on 21 April 2027
Prefectural Road 502 “Okushiga Kogen Sakae Line”
▼ LOCATION
▼ CURRENT STATUS
① Okushiga Kogen Gate to Intersection Gate – Akiyama Forest Road – Kayano-daira → Akiyamago Village
CLOSED FOR WINTER
② Intersection Gate of Akiyama Forest Road → Kayano-daira
CLOSED FOR WINTER
③ Kayano-daira Gate → Nozawa Onsen
CLOSED FOR WINTER
▼ 2026-2027 WINTER CLOSURE
① Okushiga Kogen Gate → Akiyamago Village
14:00 on 4 November 2026 – 14:00 on 21 May 2027
② Intersection Gate of Akiyama Forest Road – Kayano-daira
14:00 on 4 November 2026 – 14:00 on 21 May 2027
③ Kayano-daira Gate → Nozawa Onsen
14:00 on 4 November 2026 – 14:00 on 28 May 2027
Prefectural Road 66 “Toyonominami Shiga Koen Line”
▼ LOCATION
From From Shiga Kogen Kasagatake Gate to Takayama Village (Yamada Onsen)
▼ CURRENT STATUS
OPEN
▼ 2026-2027 WINTER CLOSURE
15:00 on 6 November 2026 – 15:00 on 21 May 2027
