is a Japanese road tunnel that opened September 27, 1989 between Fukushima City, and Inawashiro, Fukushima Prefecture. It is a mountain passage shared by Japan National Route 115 and Japan National Route 459 ().一般国道115号土湯バイパス開通式 - 福島県 This tunnel is 3.36 kilometers long and was the longest tunnel in Fukushima Prefecture at the time of its opening.福島県のトンネル 県北建設事務所 - 福島県土木部 The opening of (3.94km) in 1992 exceeded this record.
References
External links 福島県 県北建設事務所