[C4] Ken-o Expressway Mobara Chonan IC-Kisarazu East IC
Notice of traffic closure at night (10 nights)

From June 12 (Mon) to June 23 (Fri) (except Saturdays and Sundays)
 Every day from 20:00 to 5am the next morning 
 -Tunnel repairs, reverse run countermeasure work, and cleaning and inspection of bridges and signs-

  • Corporate Top
  • Press Room
  • Press Release Kanto Regional Head Office
  • [C4] Notice of night traffic closure (10 nights) between the Ken-o Expressway Mobara Chonan IC and Kisarazu East IC

May 29, 2017
East Nippon Expressway Co., Ltd.
Tokyo Wan Aqua-Line Expressway Management Office
Kisarazu Construction Office

NEXCO EAST Tokyo Bay Aqua Line Management Office (Kisarazu City, Chiba Prefecture) and Kisarazu Construction Office (Kisarazu City, Chiba Prefecture)C4 Ken-o Expressway (hereinafter referred to as "Ken-O Road") Mobara Chonan Interchange (IC) ~ between Kisarazu Higashi IC, in order to carry out the cleaning and inspection of such measures construction and bridges, labeling tunnel repair work, reverse run, Ken-O Road will be carried out at night closed to traffic between the Mobara Chonan IC ~ Kisarazu Higashi IC.

We sincerely apologize for the inconvenience, but we ask for your understanding and cooperation so that you can have time when you go out.

1 Night closure period and section

Section of I

From June 12 (Mon) to June 16 (Fri), June 19 (Mon) to June 23 (Fri) from 2017
(Preliminary day June 26 (Mon) · June 27 (Tue)) Every day 20:00 to 5:00 the next morning
Ken-O Road outbound routes between Mobara Chonan IC and Ichihara Tsurumai IC (12.5km)

Section II

From June 12 (Mon) to June 16 (Fri) from 2017
(Preliminary day from June 19 (Mon) to June 23 (Fri)) Every day and night 20 o'clock - next morning 5 o'clock
Inner and Outer Routes from Harazuru Mai IC on the Ken-O Road Route-Kisarazu East IC

Image image of night-time suspension period and section
Image image of night-time suspension period and section
Image image of night-time suspension period and section
  • In case of rain, the suspension of traffic scheduled for Section II will be canceled and postponed sequentially from the next day.
    (The postponement of the number of canceled days will be postponed.) However, the suspension of traffic scheduled for section I will be implemented even in rainy weather.
  • Judgment of construction will be made at 16:00 on the day of construction.

2 Detour route map

The detour route at the night traffic closure between the central area Mobara Chonan IC and Kisarazu Higashi IC will be national highway No. 409 and national highway No. 410.Attachment [PDF: 197KB]

Image of detour guide map

3 Construction overview

Ken-O Road repair damaged tunnels between the Mobara Chonan IC and Kisarazu East IC on the Ken-O Expressway, carry out reverse running measures at the IC, and inspect and clean various equipment.

In order to minimize the impact on customers, we will carry out traffic closures during the nighttime on weekdays when traffic is light and carry out construction work intensively and efficiently.

We ask for your understanding and cooperation so that customers can use the Expressway safely and comfortably.

Image image of cleaning of radio rebroadcasting guide line
Radio rebroadcast induction line cleaning
Image image of inspection and cleaning of structures in the tunnel
Inspection and cleaning of structures inside the tunnel
Image image of reverse running countermeasure construction at IC at level intersection
Countermeasures against reverse running at ICs at level intersections
Image image of close visual inspection by a large bridge inspection vehicle
Close visual inspection with a large bridge inspection vehicle

4 How to obtain traffic information

(1) Information for night traffic
  • Notice signs and banners will be posted at each toll booth, rest facilities, etc.
(2) Road traffic information that can be obtained before going out
  • NEXCO EAST Customer Center
    Navi dial
    : 0570-024-024 (24 hours operator support)
    TEL
    03-5338-7524(PHS、IP電話のお客さま)
  • NEXCO EAST Road Traffic Information Site "Dora Tora"
    [PC]
    [Mobile] http://m.drivetraffic.jp/
  • For the latest regulatory information, see DraTra "Please refer to the.
  • ハイウェイテレホン(5分毎に更新される最新情報を24時間提供)
    千葉局 043-257-1620(携帯電話・PHS短縮ダイヤル#8162
  • 日本道路交通情報センター(JARTIC)の道路交通情報
    全国共通ダイヤル 050-3369-6666(携帯電話短縮ダイヤル#8011
    ※全国どこからでも最寄りの情報センターに接続します。
    ※PHS、IP電話など一部の電話からはご利用できません。
    全国・関東甲信越情報 050-3369-6600
    千葉情報050-3369-6612
    インターネット
(3) Road traffic information available while driving
  • Road information board
  • Highway radio (AM1620kHz)
    The highway radio section is indicated by signs on the Expressway.
  • Highway information terminal
    We will inform you of the traffic jam information on the TV screen in an easy-to-understand manner.
    Tateyama Expressway Ichihara SA (up and down)
    Tokyo Wan Aqua-Line Expressway Umihotaru PA
  • VICS
    Road traffic information can be obtained with VICS-compatible onboard equipment such as car navigation.
* Twitter's official account "NEXCO EAST​ (Kanto)" (@e_nexco_kanto ) Also distributes information.
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