page_title: Japan National Route 48
section_title: Route description
hierarchical_section_title: Japan National Route 48 / Route description
caption_attribution_description: 日本語: 愛子バイパス（仙台市青葉区）
context_page_description: National Route 48 is a national highway of Japan that connects the capital cities of Miyagi Prefecture and Yamagata Prefecture, Sendai and Yamagata. It has a total length of 75.0 kilometers.
context_section_description: National Route 48 is one of the primary east-west highways in the prefectures of Miyagi and Yamagata and is the main toll-free route between the city of Sendai on the Pacific coast and the city of Yamagata in Yamagata Prefecture's interior plains. It carries traffic across the Ōu Mountains that separate the two cities. The highway's eastern terminus lies at a junction with National Route 45 in Sendai's Aoba ward. Its first stretch is a brief concurrency with National Route 286. Leaving National Route 286 and central Sendai, a 5.4-kilometer-long (3.4 mi) section of the highway, the Sendai Nishi Road is a limited-access road that connects central Sendai to the cross-country Tōhoku Expressway via 3.13 kilometers (3,130 m) of tunnels. Continuing west from the junction with the Tōhoku Expressway, the highway continues as the Ayashi Bypass. The highway meets National Route 457, which is shares a brief concurrency with before that route continues to the south. Crossing into Yamagata Prefecture the highway shares a significant concurrency with National Route 13 in the Yamagata cities of Tendō and Yamagata. The highway while running conccurently with National Route 13, meets its western terminus at a junction with National Route 112 to the south of central Yamagata. The highway has a total length of 75.0 kilometers (46.6 mi).
caption: The Ayashi Bypass section of the highway in Sendai looking west towards the Ōu Mountains
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