The is a national expressway connecting Iida, Nagano and Hamamatsu. It is owned and operated by Ministry of Land, Infrastructure, Transport and Tourism and is signed National Route 474 as well as E69 under their "2016 Proposal for Realization of Expressway Numbering."
Toll gates are appended with TB instead of an exit number. There are currently no service areas.
|colspan="10" style="text-align:center; "| (Inasa Branch) through to