description Enasan Tunnel Overview
The Enasan Tunnel is a major road infrastructure located on the Chuo Expressway in central Japan. Spanning approximately 8.6 kilometers, the tunnel bores through the Ena Mountains along the border of Nagano and Gifu prefectures. It was completed and opened to traffic in 1975, functioning as a critical high-speed transportation link between the Pacific coast and the inland mountain regions. The passage is designed to provide a reliable, weather-independent route for travelers and commercial freight crossing the mountainous terrain.
help Enasan Tunnel FAQ
Where is the Enasan Tunnel located?
The Enasan Tunnel carries the Chuo Expressway through the Ena Mountains in central Japan. It lies on the route connecting the Nagano and Gifu sides of the mountain corridor.
How long is the Enasan Tunnel?
The Enasan Tunnel spans approximately 8.6 kilometers. Its length makes it a major feature of the Chuo Expressway rather than a short urban underpass.
When did the Enasan Tunnel open to traffic?
The tunnel opened in 1975 as part of the Chuo Expressway's expansion through central Japan. The route provided a faster road connection through the mountainous area than older surface roads.
Which road uses the Enasan Tunnel?
The Enasan Tunnel is part of Japan's Chuo Expressway, a major east-west motorway. Drivers encounter it while traveling through the mountainous section between the Nagano and Gifu regions.
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