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.
Traffic Restrictions Due to Events in October
Shiga Kogen Shirakaba Rout (Shiga Kogen Yamanoeki – Hotel Astoria)
Due to the “Craft Fair in Shiga Kogen” event, the road will be closed to vehicles during the event.
Please use National Route 292 to access the event venue, Shiga Kogen Yamanoeki.
Location: Shiga Kogen Yamanoeki – Hotel Astoria
Okushiga Koen Sakae Line (Intersection Kayano-daira – Nozawa Onsen Village)
Due to the “Nozawa Onsen Cycling Festival,” the road will be completely closed to traffic during the event.
Location: Route 502 (Okushiga Kogen Sakae Line) between Kayano-daira Intersection and Nozawa Onsen Village
★Event detail: Nozawa Onsen Cycle Event
National Route R292 “Shiga-Kusatsu Kogen Route”
LOCATION
Shiga-Kusatsu Kogen Route（From Shiga Kogen Yosaka Gate to Kusatsu Tenguyama Gate）
CURRENT STATUS
OPEN
【Passable】Shiga Kogen Yosaka Gate ⇔ Shibutoge, Japan’s Highest National Route Point
【Passable】Shibutoge, Japan’s Highest National Route Point ⇔ Manza Junction
【Passable】Manza Junction ⇔ Manza Onsen ⇔ Kusatsu Onsen (via Manza Toll Highway)
【Passable】Manza Junction ⇔ Kusatsu Sesshogawara Gate – Kusatsu Onsen (Route 292)
>> For more information, please check this page before inquiring, or call Gunma Pref. Nakanojo Doboku Jimusho (Ph: +81 279-75-3047).
Prefectural Road 502 “Okushiga Kogen Sakae Line”
LOCATION
From Okushiga Gate (Okushiga Kogen) to Nozawa Onsen Village (Incl. Kayano-daira and Akiyamago Village)
CURRENT STATUS
【OPEN】Okushiga Kogen Gate to Intersection Gate of Akiyama Forest Road
【OPEN】Intersection Gate of Akiyama Forest Road → Kayano-daira
【OPEN】Intersection Gate of Akiyama Forest Road → Nozawa Onsen *Road closed to all traffic from 9:00 to 13:00 on 3 October 2026, due to an event.
Prefectural Road 66 “Toyonominami Shiga Koen Line”
LOCATION
From From Shiga Kogen Kasagatake Gate to Takayama Village (Yamada Onsen)
CURRENT STATUS
OPEN
