Nishi-Kyushu Expressway

Nishi-Kyūshū Expressway
西九州自動車道
Route information
Length:	150 km (90 mi)
Existed:	1988 – present
Major junctions
From:	Fukushige Junction in Nishi-ku, Fukuoka Fukuoka Expressway 2 Fukuoka Expressway 5
To:	Takeo Junction in Takeo Nagasaki Expressway
Location
Major cities:	Karatsu, Imari, Matsuura Sasebo
Highway system
National highways of Japan Expressways of Japan

Hasami, Nagasaki, Japan

The Nishikyushu Expressway (西九州自動車道 Nishi-Kyūshū jidōshadō) is one of the Expressways of Japan from Fukuoka to Takeo. It runs through the prefecture of Saga, and the northern half of the Nagasaki prefecture. The total length is 150 km.

A whole part of the road is specified as the Route 497. This road has two toll zones. The Fukuoka and Maebaru toll zone is managed by Fukuoka Prefectual Road Public Corporation. The Takeo and Sasebo toll zone is managed by West Nippon Expressway Company. The others is managed by MLIT. This road is connected to Fukuoka Expressway Circular Route in Nishi-ku, Fukuoka and to Nagasaki Expressway in Takeo. From Nijō to Nijō Shika Interchange is overlap section of Nijō Hamatama road.

Overview

The first section of the expressway was opened to traffic in 1988. As of April 2016 the expressway incomplete in many areas. The next sections are scheduled to open in 2017 (Minamihata Taniguchi Interchange to Imari Higashi Interchange) and (Imabuku Interchange to Tsukinokawa Interchange). After this, Most of the incomplete areas will be built according to the New Direct Control System, whereby the burden for construction costs will be shared by the national and local governments and no tolls will be collected. Currently the section between Nijō Shikaka Interchange and Minamihata Taniguchi Interchange, Yamashiro Kubara Interchange and Imabuku Interchange, and Saza Interchange and Sasebo Daitō Interchange operates according to this principle.

The expressway is 4 lanes from Fukushige Junction to Higashi Intersection (temporary interchange) and Saza Interchange to Sasebo Chūō Interchange, and 2 lanes for all remaining sections.

History

• March 24, 1988, a section from Sasebo Daitō to Hasami Arita Interchanges was opened to traffic.
• November 30, 1989, a section from Hasami Arita to Takeo Minami Interchange was opened to traffic.
• January 26, 1990, a section from Takeo Minami Interchange to Takeo Junction was opened to traffic with another freeway.
• March 26, 1993, a section from Susenji Interchange to Higashi Intersection (temporary interchange) was opened to traffic.
• April 17, 1998, a section from Sasebo Minato to Sasebo Daitō Interchange was opened to traffic.
• September 26, 1998, a section from Jyūrokuchō to Susenji Interchanges was opened to traffic.
• October 13, 2001, a section from Fukushige Junction to Jyūrokuchō Interchange was opened to traffic with another freeway.
• November 2003, a section from Fukushige Junction to Maebaru Interchange which made with four lanes.
• December 18, 2005, a section from Hamatama to Karatsu Interchange was opened to traffic.
• December 12, 2009, a section from Nijō Shikaka to Hamatama Interchange was opened to traffic with another freeway.
• March 20, 2010, a section from Ainoura Nakazato to Sasebo Minato Interchanges was opened to traffic.
• February 26, 2011, a section from Fukushige Junction to the east was opened with other freeway.
• September 13, 2011, a section from Saza to Ainoura Nakazato Interchange was opened to traffic.
• March 24, 2012, a section from Karatsu to Karatsu Chichika Yamada Interchange was opened to traffic.
• March 23, 2013, a section from Karatsu Chichika Yamada to Kitahata Interchange was opened to traffic.
• February 1, 2015, a section from Kitahata to Minamihata Taniguchi Interchange was opened to traffic.
• March 14, 2015, a section from Yamashiro Kubara to Imabuku Interchange was opened to traffic.

Interchanges

• IC - interchange, SIC - smart interchange, JCT - junction, SA - service area, PA - parking area, BS - bus stop, TN - tunnel, BR - bridge, TB - toll gate
• Bus stops labeled "○" are currently in use; those marked "◆" are closed.

No.	Name	Connections	Dist. from Origin	Bus stop	Notes	Location
JCT	Fukushige JCT	Fukuoka Expressway 2 Fukuoka Expressway 5	0.0			Fukuoka	Fukuoka
	Jyūrokuchō IC		0.8		Sasebo-bound entrance
			2.0		Sasebo-bound exit
TB/PA	Fukuoka Nishi TB/PA		2.1
	Imajuku IC		3.5		For Fukuoka only
	Susenji IC		6.6		For Sasebo only
TB	Maebaru TB		12.1				Itoshima
	Maebaru IC		12.6		For Fukuoka only
	Higashi Intersection (temporary interchange)		14.2
	Nijō IC				Planned
Planned route Through to Nijō Hamatama Road
	Nijō Shikaka IC		0.0
	Hamatama IC		3.8			Saga	Karatsu
	Karatsu IC		10.4
	Karatsu Chichika Yamada IC		14.9
	Kitahata IC		18.4
	Minamihata Taniguchi IC		23.2				Imari
	Imari Hagashi IC				Scheduled to be opened in 2017
Planned route
	Imari Naka IC				Planned
	Imari Nishi IC				Planned
	Kusuku IC				Planned
	Yamashiro Kubara IC		0.0
	Imabuku IC		5.5			Nagasaki	Matsuura
	Tsukinokawa IC				For Fukuoka only Scheduled to be opened in 2017
	Matsuura IC				Scheduled to be opened in 2018
Planned route
	Hirado Mikuriya Emukae IC				Planned	Nagasaki	Sasebo
	Emukae Shikamachi IC				Planned
8	Saza IC		38.9				Saza
7	Ainoura Nakazato IC		34.9				Sasebo
6	Sasebo Chūō IC		29.9
5	Sasebo Minato IC		27.0		For Takeo only
4	Sasebo Daitō IC/TB		22.1
3	Sasebo Mikawachi IC/TB		14.8
2	Hasami Arita IC		10.1	○			Hasami
1	Takeo Minami IC/TB		0.0		For Fukuoka only	Saga	Takeo
6	Takeo JCT	Nagasaki Expressway	0.7