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[C4] Between the Matsuo Yokoshiba IC and Kisarazu Higashi IC on the Ken-O Ken-o Expressway
Choshi Renraku Road Matsuo Yokoshiba IC-Yokoshiba Hikari IC Notice of nighttime closure

May 13th (Mon) to May 22nd (Wed) from 8pm to 5am each day
~We will carry out pavement repair work, structure inspections, etc.~

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  • [C4] Ken-o Expressway Matsuo Yokoshiba IC-Kisarazu Higashi IC and Choshi Access Road Matsuo Yokoshiba IC-Yokoshiba Hikari IC Notice of nighttime closure
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PDF version [PDF: 2.0MB]

April 12 2024
East Nippon Expressway Co., Ltd.
Ichihara Management Office
Tokyo Wan Aqua-Line Expressway Management Office

NEXCO EAST Ichihara Management Office (Ichihara City, Chiba Prefecture) and the Tokyo Wan Aqua-Line Expressway Management Office (Kisarazu City, Chiba Prefecture) will be implementing a night-time road closure on the C4 Ken-o Expressway (hereinafter referred to as the "Ken-O Road") from Matsuo Yokoshiba Interchange (hereinafter referred to as the "IC") to Kisarazu Higashi IC to carry out pavement repair work, structure inspections, etc.
In addition, the Choshi Link Road (managed by the Chiba Prefectural Road Public Corporation), which connects directly to the Ken-Ken-O Road, will also be closed (entry prohibited) because customers who entered from the Yokoshiba Hikari Interchange will not be able to exit onto the general road from the Matsuo Yokoshiba Interchange.
We apologize for any inconvenience this may cause, and we ask for your understanding and cooperation in allowing yourself plenty of time when heading out.

1. Closed section and date and time

  1. Closed section:
    Section I
    Ken-O Road Inner and Outer Loop Matsuo Yokoshiba IC to Mobara Chonan IC
    Choshi Link Road, both inbound and outbound lanes, Matsuo Yokoshiba IC to Yokoshiba Hikari IC
    Section II
    Ken-O Road Inner and Outer Loop Mobara Chonan IC to Ichihara Tsurumai IC
    Section III
    Ken-O Road-O Expressway Inner and Outer Route Ichihara Tsurumai IC - Kisarazu East IC
    2. Image image of closed section
    • Attached to each line C4 The indications such as indicate the route number (numbering) of Expressway.
  2. Date and time
    Section I
    Implementation date:
    May 13th (Monday) to May 22nd (Wednesday) 2024
    [Excluding Saturdays and Sundays] Every day from 20:00 to 5:00
    Preparation day:
    2024- Monday, June 3, 2020
    [Excluding Saturdays and Sundays] Every day from 20:00 to 5:00
    Section II
    Implementation date:
    May 13th (Monday) to May 21st (Tuesday) 2024
    [Excluding Saturdays and Sundays] Every day from 20:00 to 5:00
    Preparation day:
    2024- Thursday, May 30, 2020
    [Excluding Saturdays and Sundays] Every day from 20:00 to 5:00
    Section III
    Implementation date:
    May 13th (Monday) to May 17th (Friday) 2024
    Every day from 20:00 to 5:00
    Preparation day:
    May 20th (Monday) to May 24th (Friday) 2024
    Every day from 20:00 to 5:00
Image of date and time
Two-dimensional code image link to NEXCO EAST (Kanto Construction Regulations) X (formerly Twitter) (external link)
  • The rest facilities in the closed section will be closed as follows.
    Ken-O Ken-O Road Takatakiko Parking Area Every night from 19:30 to 5:00 the next morning
  • In stormy weather, it will be postponed to the spare day.
  • The decision to proceed with construction will be announced on X (formerly Twitter) etc. around 5:00 pm on the same day.

2. Detour

For detours, please refer to Attachment-1 [PDF: 177KB] and Attachment-2 [PDF: 207KB].
The detour will increase travel time, so please allow yourself plenty of time when traveling.

3. Regarding transit adjustments due to suspension of traffic

For customers who exit Expressway due to a road closure, detour around the closed section, then re-enter and transfer in the forward direction, a "transfer adjustment" will be implemented in which the toll will be adjusted according to the section used. (See Appendix 3 [PDF: 1.0MB])

Transfer IC

Closed section Outflow designation IC Re-inflow IC
Section I
+
Section II
+
Section Ⅲ		 [Ken-O Road] (Inner loop)
Kisarazu Higashi IC ⇒ Matsuo Yokoshiba IC
(From Kawasaki to Choshi)		 [Ken-O Road]
(Inner loop) Kisarazu East IC
[Tateyama Expressway]
(In-bound line) Kimitsu IC
(Out-bound line) Kisarazu North IC, Kisarazu South IC
[Connecting road]
(Out-bound line) Sodegaura IC		 [Chiba-Togane Road]
(In-bound line) Togane IC, Yamada IC, Nakano IC
[Ken-O Road] (Outside)
Matsuo Yokoshiba IC ⇒ Kisarazu Higashi IC
(From Choshi to Kawasaki)		 [Chiba-Togane Road]
(Out-bound line) Nakano IC, Yamada IC, Togane IC		 [Ken-O Road]
(Outer loop) Kisarazu East IC
[Tateyama Expressway]
(In-bound) Anesaki-Sodegaura IC, Kisarazu Kita IC,
Kisarazu Minami IC
(Out-bound) Kimitsu IC, Futtsu Chuo IC
[Connecting road]
(In-bound) Sodegaura IC
Section I
+
Section II		 [Ken-O Road] (inner loop)
Ichihara Tsurumai IC ⇒ Matsuo Yokoshiba IC
(From Kawasaki to Choshi)		 [Ken-O Road]
(Inner loop) Ichihara Tsurumai IC, Kisarazu East IC		 [Chiba-Togane Road]
(In-bound line) Togane IC, Yamada IC, Nakano IC
[Ken-O Road] (Outer loop)
Matsuo Yokoshiba IC ⇒ Ichihara Tsurumai IC
(From Choshi to Kawasaki)		 [Chiba-Togane Road]
(Out-bound) Togane IC, Yamada IC, Nakano IC		 [Ken-O Road]
(Outer loop) Ichihara Tsurumai IC, Kisarazu East IC
[Tateyama Expressway]
(In-bound) Kisarazu Kita IC, Kisarazu Minami IC
(Out-bound) Kimitsu IC
[Connecting road]
(In-bound) Sodegaura IC
Section I [Ken-O Road] (Inner loop)
Mobara Chonan IC ⇒ Matsuo Yokoshiba IC
(From Kawasaki to Choshi)		 [Ken-O Road]
(Inner loop) Mobara Chonan IC, Ichihara Tsurumai IC		 [Chiba-Togane Road]
(In-bound line) Togane IC, Yamada IC, Nakano IC
[Ken-O Road] (Outer loop)
Matsuo Yokoshiba IC ⇒ Mobara Chonan IC
(From Choshi to Kawasaki)		 [Chiba-Togane Road]
(Out-bound) Togane IC, Yamada IC, Nakano IC		 [Ken-O Road]
(Outer loop) Mobara Chonan IC, Ichihara Tsurumai IC,
Kisarazu East IC

How to use transit adjustment

ETC customers

  • For customers using ETC, please drive wirelessly at designated outflow ICs, and also wirelessly drive at re-inflow ICs. (Transfer certificates are not issued for ETC vehicles)
  • ETC time zone discount will be applied, considering the transited journey as one.
    Toll charges are adjusted at the time of billing, so they may differ from those displayed at the toll gate.
  • Insert the same ETC card for all journeys and pass through the ETC lane at the tollgate.

Customers such as cash

  • Customers paying with cash, etc. should receive a "transfer certificate" at the outflow designated IC, then take a "transit ticket" at the re-inflow IC, and then take the "transition certificate" at the toll booth where they pay the toll for the first time. Please hand over your ``book'' and ``traffic ticket.''

Common to ETC and cash customers

  • If the suspension of traffic is released after the outflow designated IC is released, the fare will be adjusted even if it is re-introduced from the IC (including the outflow designated IC) in the closed road section in the forward direction.

Four. Construction overview

A night-time road closure will be implemented on Ken-O Road between Matsuo Yokoshiba IC and Kisarazu Higashi IC to carry out repair work on damaged pavement and inspection of structures.
The section where this work will be carried out has only one lane in each direction, and since the work cannot be carried out under normal lane restrictions, in order to minimize inconvenience to customers, we will close the road at night on weekdays when traffic volume is low, and carry out the work in a concentrated and efficient manner. This work is necessary to ensure that customers can use Expressway safely and comfortably, so we ask for your understanding and cooperation.

Image image of pavement repair work Image image of caption of pavement repair work
Image of inspection of structures, etc. Image of caption for inspection of structures, etc.

Five. How to obtain traffic information

(1) Guidance by distribution / posting

  • Notice signs, posters and leaflets will be posted at toll booths and rest facilities nearby.
  • A banner will be posted on the overpass on the Expressway.

(2) Road traffic information that can be obtained before going out

(3) Road traffic information available while using the Expressway

  • 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 road information in an easy-to-understand manner by the monitor screens installed in SA / PA.
  • VICS
    You can get road traffic information with VICS-compatible car navigation and other on-board devices.
  • Information is also distributed on official X (formerly Twitter) and LINE accounts.
    [X (old Twitter)]
    "NEXCO EAST (Kanto)" (@e_nexco_kanto) Real-time traffic information
    “NEXCO EAST (Kanto Construction Regulations)” (@e_nexco_kanto_k) Decision to implement construction regulations
    [LINE]
    "NEXCO EAST" (@e-nexco) Road closures and weather information
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