Japan National Route 456

National Route 456 is a national highway of Japan connecting Morioka, Iwate and Motoyoshi, Miyagi in Japan, with a total length of 154.5 km (96 mi).

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Sign on Prefectural Road 8 in Esashi Ward, Oshu City showing how 456 joins 8 and 14. JR Mizusawa-Esashi Station is on 14 to the right. This sign is usually hidden by tree branches in summer.