[Notice of Winter Road Closures for Reiwa 7]

[Winter Road Closure Notice 2025.10.31]
The following roads in the Mashu area will be closed for winter starting today, October 31, 2025.

・Prefectural Route 52 Kussharo Mashu Kohan Line (Third Observation Deck) from 15:00
・Prefectural Route 150 Lake Mashu Nakashibetsu Line (Uramashu Observatory) from 9:00
Access to Lake Mashu is possible from the Teshikaga town area up to Lake Mashu Kamuy Terrace (Lake Mashu Kamuy Terrace (Lake Mashu Observatory No. 1)) via Prefectural Route 52.

・Prefectural Route 588 Kussharo Tsubetsu Line (Tsubetsu Pass) from 10:00
The winter detour for Tsubetsu Pass is National Route 243 (Bihoro Pass).

・Prefectural Route 587 Atosatokoshimizu Line (9.8 km from near the summit of Mokoto Pass toward Koshimizu town area) from 10:00

Announcements about lifting winter closures will be posted on Teshikaga Navi.
We apologize for the inconvenience and appreciate your understanding and cooperation.
https://www.masyuko.or.jp/news/r7stoproad/...