Japan National Route 189

Road in Yamaguchi prefecture, Japan

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National Route 189

国道189号

Route information

Length

0.4 km^[1] (0.25 mi; 1,300 ft)

Existed

1953–present

Major junctions

East end

Marine Corps Air Station Iwakuni

West end

National Route 188 in Iwakuni, Yamaguchi

Location

Country

Japan

Highway system

National highways of Japan

Expressways of Japan

←

National Route 188

→

National Route 190

National Route 189 is a national highway of Japan in Iwakuni, Yamaguchi, connecting Marine Corps Air Station Iwakuni and Japan National Route 2, with a total length of 0.4 km (0.25 mi).^{[Note 1]}

Overview

Route 189 connects with the main gate of Marine Corps Air Station Iwakuni at the southernmost end, and with the Taiteishi intersection of Routes 2 and 188. Access to the commercial portion of Air Station Iwakuni is provided by the Yamaguchi Prefectural Route 110 Iwakuni Kintaikyo Airport Line.^[2]

While the actual length of the road is 2.9 km (1.80 mi), over 2.5 km (1.55 mi) of this overlaps with Japan National Route 188. The section of this route with no overlap is just 372 m (1,220.5 ft) long, making it the second-shortest national highway in Japan, longer than Route 174 by 185 m (607.0 ft), and shorter than Route 130 by 110 m (360.9 ft).^[3]

Intersecting roads

Intersecting roads	Intersects to
Japan National Route 188 Overlapping section start	Kurumacho	Iwakuni Airport Entrance Intersection
Japan National Route 2 Japan National Route 187 Japan National Route 188 Overlapping section end	Japan National Route 188	Tateishi Intersection/End of Route

Route Data

Start and end points are as designated by ordinance.^[4]

Start: Iwakuni Airport
End: 1-Chome, Marifu, Iwakuni City
Length: 0.4 km (0.25 mi)

History

Route 189 was opened in 1953, first designated as a second class national highway named Second-class National Route 189 Iwakuni Airport Line.^[5] At that time, Iwakuni Airport and Haneda Airport were the only two international airports in western Japan, making this an important road.^[6] As US military presence increased, gradually civilian aircraft were not allowed at the airport, until in 1967 civilian operations ceased.^[6]

Until 2010 the official end-point of Route 189 lay within the US military base at Iwakuni, causing road management and maintenance issues as the general public have no access. This was due to the original designation stating that the road ended before the platform where the national flag was hoisted, inside the main gate.^[7] In 2010 this was changed, with the road now officially ending at the main gate of the base.^[8]

In 2012 civilian operations from Iwakuni airport began once again with the construction of the Iwakuni Kintaikyo Airport terminal. Despite this, Route 189 remains unchanged, leaving it useless for civilians wishing to use the airport,^[9] who instead use Yamaguchi Prefectural Route 110.

Notes

^ In the 2013 road statistics report, it had a stated length of 2.9 km, but in the 2014 road statistics report, it had been shortened to 0.4 km.

References

^ "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 18 February 2020.
^ "山口県報第2344号" (PDF) (in Japanese). Yamaguchi Prefectural Bulletin. 2012-03-03. Archived from the original (PDF) on 2021-07-07. Retrieved 2022-08-23.
^ "日本の国道と浜通りの国道の比較" (in Japanese). Iwaki National Highway Office. Retrieved 2022-08-23.
^ "一般国道の路線を指定する政令". 2015-08-01. Retrieved 2022-08-23.
^ 二級国道の路線を指定する政令 (昭和二十八年) (in Japanese) – via Wikisource.
^ ^a ^b 佐藤健太郎 (2015). 国道者 (in Japanese). Shinchosha. p. 167. ISBN 978-4-10-339731-1.
^ 佐藤健太郎 (2015). 国道者 (in Japanese). Shinchosha. p. 166. ISBN 978-4-10-339731-1.
^ 佐藤健太郎 (2015). 国道者 (in Japanese). Shinchosha. pp. 167–168. ISBN 978-4-10-339731-1.
^ 佐藤健太郎 (2015). 国道者 (in Japanese). Shinchosha. p. 168. ISBN 978-4-10-339731-1.