長岡東繞道, Highway bypass in Nagaoka, Japan.
The Nagaoka East Bypass is a four-lane highway that runs through the eastern suburbs of the city. It connects National Routes 8 and 17 with grade-separated intersections at major junctions.
Construction started in 1973, with the first sections opening between 1978 and 1982 as part of the city's infrastructure development. The Nakazawa Interchange was completed in 1986, adding a key connection point to the system.
The roadway forms an integral part of Nagaoka's transportation infrastructure, with local residents commonly referring to it simply as the East Bypass.
The road is clearly marked with multiple entry and exit points, making it easy to navigate the route. Visitors exploring the region can use it to move quickly between different areas of the city.
The bypass integrates with Mitsuke, Nagaoka, and Ojiya bypasses to form an outer ring road network around the Nagaoka metropolitan area.
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