thumb National Route 51 is a national highway of Japan connecting Chūō-ku, Chiba and

Mito, Ibaraki is the capital city of Ibaraki Prefecture, in the northern Kantō region of Japan. , the city had an estimated population of 269,330 in 123,282 households and a population density of 1239 persons per km2. The percentage of the population aged o ...

Route data

*Length: 124 km (77.05 mi).

History

Route 51 was originally designated National Route 123 on 18 May 1953 as , and then was redesignated Route 51 when the route was promoted to a Class 1 highway.

References

051 Roads in Chiba Prefecture Roads in Ibaraki Prefecture {{Japan-road-stub