Ken-Ō Expressway

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Ken-O Expwy Route Sign.svg

Japanese National Route Sign 0468.svg National Route 468
Route information
Length: 300 km (200 mi)
History: Opened in stages since 1996
Major junctions
Loop around Tokyo
West end: Kamariya Junction
East end: Kisarazu Junction
Location
Major cities: Yokohama, Kanagawa (future)
Fujisawa, Kanagawa
Chigasaki, Kanagawa
Atsugi, Kanagawa
Sagamihara, Kanagawa (future)
Hachioji, Tokyo
Ome, Tokyo
Kawagoe, Saitama
Tsukuba, Ibaraki
Narita, Chiba (future)
Ichihara, Chiba
Kisarazu, Chiba
Highway system
National highways of Japan
Expressways of Japan
Ken-O at North Hachioji

The Ken-O Expressway (圏央道 Ken-Ō Dō?), or Metropolitan Inter-City Expressway (首都圏中央連絡自動車道 Shuto-ken Chūō Renraku Jidōsha-dō?),[1] is a partially completed ticket system toll expressway in Japan, owned and operated by the Central Nippon Expressway Company and East Nippon Expressway Company. In conjunction with the Tokyo Bay Aqua-Line and the Bayshore Route of the Shuto Expressway, it will form a full outer ring road of Tokyo. It is assigned the national highway Route 468 number.

Portions of the existing Yokohama-Yokosuka Expressway, Shin-Shōnan Bypass and Chiba-Tōgane Road and the planned Yokohama Ring Expressway will be incorporated into the road.

The section owned by the Central Nippon Expressway Company runs from the east end of the Shin-Shōnan Bypass west along the bypass and north to interchange 42. The rest is owned by the East Nippon Expressway Company.

Route description[edit]

The expressway will begin at the south end of the Bayshore Route in Yokohama, where it will head west on the existing branch of the Yokohama-Yokosuka Expressway to that road's main line. At the junction with the main line, the current expressway ends; ramp stubs are present to continue the road west. It will split from the planned Yokohama Ring Expressway and continue west to the east end of the Fujisawa Bypass (part of Route 1). An upgrade of that road will take it to the existing Shin-Shōnan Bypass, an expressway, which it will split from as that road turns towards the south.

The Ken-O Expressway will then head north, crossing the Tōmei Expressway and Chūō Expressway. North of the latter road, the present expressway begins, heading north and northeast to the junction with the Kan-Etsu Expressway. There it will continue east across the Tōhoku Expressway and Jōban Expressway; a short piece from the Joban Expressway east to the next interchange has been opened. It will turn southeast, crossing the Higashi-Kantō Expressway east of Narita Airport, and then running south to the present end of the Chiba-Tōgane Road, a two-lane expressway. Where that road abruptly turns west, the Ken-O Expressway will continue south, looping west to and at the junction of the Tokyo Bay Aqua-Line and Tateyama Expressway.

Economic significance[edit]

Along with the Japan National Route 16, Ken-Ō Expressway connects the entire length of the Technology Advanced Metropolitan Area (TAMA) Network region - an inland industrial area covering an area of 3000 km2, covering 74 municipalities and home to over 10 million people of whom 4 million work in the TAMA Network firms. In 1998 goods shipped from TAMA had twice the shipment value of the Silicon Valley.[2]

Exit list[edit]

Updated As of June 2015, With The opening of Taiei Junction Near Narita Airport.

Sections not yet opened are shown with a red background.

Parking Areas are appended with PA, Junctions with Junction / JCT. There are currently no Service Areas.

Number km Name Intersecting routes Opened Notes
Namiki (並木) Shuto Expressway Bayshore Route; Route 357 counterclockwise exit and clockwise entrance
Horiguchi Noukendai (堀口能見台) Route 16 counterclockwise exit and clockwise entrance
Kamariya Junction (釜利谷 JCT) Yokohama-Yokosuka Expressway; Route 16 bypass Opening Planned in 2020
Kuden (公田) Opening Planned in 2020
Sakae Junction (栄 JCT) Yokohama Ring Expressway Opening Planned in 2020
~ Fujisawa (藤沢) Route 1 March 30, 1988
24 Chigasaki Chuo (茅ヶ崎中央) March 30, 1988
25 Chigasaki Minami Junction (茅ヶ崎 JCT) Shin-Shōnan Bypass; Route 1 bypass April 14, 2013
26 Samukawa Minami (寒川南) April 14, 2013
27 Samukawa Kita (寒川北) April 14, 2013
Ebina Minami Junction (海老名南 JCT) Second Tōmei Expressway Opening 2016
4-1 Ebina Junction (海老名 JCT) Tomei Expressway February 27, 2010
31 Ebina (海老名) February 27, 2010
32 Ken-o-Atsugi (圏央厚木) Route 129/Route 246 March 30, 2013
PA Atsugi PA (厚木 PA) March 30, 2013 Samrt IC planned opening 2018
33 Sagamihara Aikawa (相模原愛川) Route 129 March 30, 2013
34 Sagamihara (相模原) March 29, 2015
35 Takaosan (高尾山) Route 20 bypass March 25, 2012
6 Hachiōji Junction (八王子 JCT) Chūō Expressway June 23, 2007
41 Hachiōji Nishi (八王子西) June 23, 2007
42 Akiruno (あきる野) Route 411 March 21, 2005
43 Hinode (日の出) March 29, 2002
44 Ōme (青梅) March 26, 1996
45 Iruma (入間) Route 16 March 26, 1996
PA Sayama PA (狭山PA) July 18, 2008
46 Sayama Hidaka (狭山日高) March 26, 1996
47 Tsurugashima (圏央鶴ヶ島) March 26, 1996
50 Tsurugashima Junction (鶴ヶ島 JCT) Kan-Etsu Expressway March 26, 1996
51 Sakado (坂戸) March 29, 2008
52 Kawashima (川島) Route 254 March 29, 2008
60 Okegawa Kitamoto (桶川北本) Route 17 March 2010
61 Okegawa Kano (桶川加納) Prefectural Route 12 October 31, 2015
PA Shobu PA (菖蒲PA) October 31, 2015
62 Shiraoka Shōbu (白岡菖蒲) Route 122 bypass April 2011
70 Kuki Shiraoka Junction (久喜白岡 JCT) Tōhoku Expressway April 2011
71 Satte (幸手) March 29, 2015
73 Goka (五霞) Route 4 bypass March 29, 2015
74 Sakai Goka (境古河) Route 354 bypass March 29, 2015
PA Bando PA 坂東PA Opening 2015
75 Bando (坂東) Route 294 bypass Opening 2015
76 Tsukuba-Chuo (つくば中央) April 24, 2010
4-1 Tsukuba Junction (つくば JCT) Jōban Expressway March 29, 2003
81 Tsukuba Ushiku (つくば牛久) Route 6 bypass March 29, 2003
82 Ushiku Ami (牛久阿見) March 2007
83 Ami Higashi (阿見東) March 2007
PA Edoshima PA (江戸崎 PA) July 2014
84 Inashima (稲敷) March 2009
85 Inashiki Higashi (稲敷東) April 2014
86 Kouzaki[disambiguation needed] (神崎) Route 356 bypass April 2014
87 Shimofusa (下総) June 2015
 ? Taiei Junction (大栄 JCT) Higashi-Kantō Expressway Near Narita Airport June 2015
(91) Planned (成田小見川鹿島港線) Planning Phase (beyond 2018)
(92) Planned (国道296号線) Planning Phase (beyond 2018)
93 Matsuo Yokoshiba (松尾横芝) March 30, 1998
94 Sanmu Narutō (山武成東) March 30, 1998
100 Tōgane Junction (東金 JCT) Chiba-Tōgane Road March 30, 1998
101 Togane (東金) Route 126 Junction & IC Separated in 2013
102 Mobara-Kita (茂原北) April 27, 2013
103 Mobara Chōnan (茂原長南) Route 409 2013
104 Ichihara tsurumai (市原鶴舞) Route 297 2013
PA Takatakiko PA (高滝湖) July 12, 2013
105 Kisarazu Higashi (木更津東) Route 410 bypass 2013
110 Kisarazu Junction (木更津 JCT) Tokyo Bay Aqua-Line; Tateyama Expressway 2013
111 Tokyo Disneyland Opening 2018

External links[edit]

References[edit]

  1. ^ http://www.kensetsu.metro.tokyo.jp/english/douro/gaiyo/01.html
  2. ^ Chandra, Pankaj. "Networks of Small Producers for Technological Innovations: Some Models" (PDF). IIM Ahmedabad Working Paper No. 2006-03-02, March 2006. IIM Ahmedabad. Retrieved 10 March 2012.