• Source: Japan National Route 42

National Route 42 (国道42号, Kokudō yonjūni-gō), also called Kumano Kaidō or Tropical Route is a national highway connecting Hamamatsu, Shizuoka and Wakayama, Wakayama in Japan. Part of the route requires crossing Ise Bay on the Ise-wan Ferry. It is the 8th longest national highway in Japan.




Route data


The total length on the main road is 487.2km(307.2 miles). However, by factoring in the overlapped section (33.4km/20.8 miles) and the sea crossing(19.8km/12.3 miles)the total distance becomes 540.3km(335.7miles). At the origin Hamamatsu, the route starts overlapped with Route 1 and, is a junction to route 257 and 300. The route passes though the cities of Tahara, Toba, Ise, Matsusaka, Owase, Kumano, Shingū, Tanabe, and Gobō. At the terminus Wakayama, there is a junction with national route 24 and 26.




= Overlapping sections

=
From the origin to Kosai: Route 1
From Tahara to Toba (Ferry crossing section): Route 259
From Toba to Ise: Route 167
From Ise to Matsusaka : Route 23
From Tanabe to Minabe: Route 424




History


Route 42 was originally designated in January 1945 as a section of Route 41 (the Kumano Highway), which ran to Tokyo. This ran concurrent with Route 1 (now Route 1/Route 23). On 18 May 1953 Route 41 was classified as a Class 2 highway and redesignated as Route 170, which was later redesignated as Route 42 when the route was promoted to a Class 1 highway. On 1 April 1965, the classification of Class 1 and Class 2 was discontinued, redesignating it as General National Route 42.
On 1 April 1993, the highway was changed by removing the section of Tsu-Matsusaka and adding the Hamamatsu - Matsusaka. This was part of the plan to connect the Atsumi Peninsula, though the Kii Peninsula, Shikoku, Kyushu and terminating at Okinawa. This plan is called the Japan Sea National Land Axis Plan.




Passes through


Shizuoka Prefecture
Hamana Bypass (浜名バイパス)
Hamamatsu - Kosai
Aichi Prefecture
Sanen Ise Access Road (三遠伊勢連絡道路) - Planning Stage
Hamamatsu - Ise (Mie Prefecture)
Mie Prefecture
Matsusaka - Taki Bypass (松阪多気バイパス)
Matsusaka - Taki
Kumano - Owase Road (熊野尾鷲道路)
Owase - Kumano
Odomari Bypass (大泊バイパス)
Kumano
Kumano Road (熊野道路)
Kumanoo
Kiho Bypass (紀宝バイパス)
Kiho - Shingu
Shingu - Kiho Road (新宮紀宝道路)
Kiho - Shingu
Wakayama Prefecture
Nachikatsuura - Shingu Road (那智勝浦新宮道路)
Shingu - Nachikatsuura
Kushimoto - Taiji Road (串本太地道路)
Taiji - Kushimoto
Susami - Kushimoto Road (すさみ串本道路)
Kushimoto - Susami
Yuasa - Gobo Road (湯浅御坊道路) - Toll Road
Gobo - Yuasa
Hiki River Road (日置川道路)
Sasumi - Shirahama
Tanabe Bypass (田辺バイパス)
Kamitonda - Tanabe
West Tanabe Bypass (田辺西バイパス)
Tanabe
Yura Bypass (由良バイパス)
Yura - Hirogawa
Arida Bypass (有田バイパス)
Arida
Shimizu Widening (冷水拡幅) - Partially Under Construction
Kainan
Arita - Kainan Road (有田海南道路) - Partially Under Construction
Arida - Kainan
Kainan Bypass (海南バイパス)
Kainan




Intersects with






References

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