 | This articlerelies largely or entirely on asingle source. Relevant discussion may be found on thetalk page. Please helpimprove this article byintroducing citations to additional sources. Find sources: "Japan National Route 51" – news ·newspapers ·books ·scholar ·JSTOR(October 2024) |
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| 国道51号 | ||||
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| Route information | ||||
| Length | 124 km[1] (77 mi) | |||
| Existed | 1 April 1963–present | |||
| Major junctions | ||||
| North end |  National Route 50 inMito, Ibaraki | |||
| South end |   National Route 14 /National Route 126 inChūō-ku, Chiba | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 51 is anational highway ofJapan connectingChūō-ku, Chiba andMito, Ibaraki.
Route 51 was originally designated on 18 May 1953 asNational Route 123, and this was redesignated Route 51 when the route was promoted to a Class 1 highway.
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