Toukai-Hokuriku Motoring Road (Hida tunnel)


Lenngty of tunnel
The second extension in the country
(the seventh place in the world)
Steel-bar for basket inspection
Product inspection
Liner arrangement chart
ライナー配置図
Izumiootu Nagaoka Shield
Japanese drainage society certification
認定書
Inquiries
 Construction materials Sles
Department
Osaka branch		 ０５９－３６３－３３３１



０６－６３６３－１８６８		 Nakazawa
Tago

Imanaka
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