Tutiyu Tunnel

LocationFukushima Prefecture

Coordinates37°39′18″N 140°16′16″E / 37.655°N 140.271°E / 37.655; 140.271

RouteJapan National Route 115 & Japan National Route 459^[1]

StartFukushima, Fukushima

Tutiyu Tunnel
Entrance to tunnel
Interactive map of Tutiyu Tunnel
Overview
Location	Fukushima Prefecture
Coordinates	37°39′18″N 140°16′16″E / 37.655°N 140.271°E / 37.655; 140.271
Route	Japan National Route 115 & Japan National Route 459[1]
Start	Fukushima, Fukushima
End	Inawashiro, Fukushima
Operation
Work begun	September 7, 1982 (1982-09-07)
Constructed	November 1986 (1986-11)
Opened	September 27, 1989; 36 years ago (1989-09-27)
Technical
Length	3.36 kilometres (2.09 mi)
No. of lanes	2
Operating speed	50km/h
Tunnel clearance	4.7 metres (15 ft)
Width	9 metres (30 ft)

Tutiyu Tunnel (土湯トンネル, Tutiyu tonneru)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 (tsuchiyu bypass [ja]).^[2] This tunnel is 3.36 kilometers long and was the longest tunnel in Fukushima Prefecture at the time of its opening.^[3] The opening of Ō-tōge Tunnel [ja] (3.94km) in 1992 exceeded this record.^[4]