Japan National Route 170

National Route 170 is a national highway of Japan connecting Takatsuki, Osaka and Izumisano, Osaka in Japan, with a total length of 74 km.

History

Route 170 was originally designated on 18 May 1953 from Wakayama to Matsusaka. After it was extended to Tsu, the route was redesignated as Route 42 on 1 April 1959. Route 170 was reassigned on a route from Takatsuki to Hashimoto on 1 April 1963. On 1 April 1982 the terminus was moved from Hashimoto to Izumisano.