Even after lifting the ban on R114 last September, the route leading to Namie, a town near the Fukushima Daiichi nuclear plant, radiation remains very high.
More info on National Route 114: http://www.asahi.com/ajw/articles/AJ201709200053.html
Fukushima Route 114 to Namie is No Route 66!
Fukushima 311 Watchdogs 