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[C4] Ken-o Expressway and outer loop, between Satte IC and Kanzaki IC
Nighttime road closure notice

~ Road repairs and inspections will be carried out, as well as construction work related to the widening of Ken-O Road four lanes ~

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  • Press Release Kanto Regional Head Office
  • [C4] Notice of nighttime road closure on the inner and outer loop Ken-o Expressway between Satte IC and Kanzaki IC
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The latest regulatory information isDraTraPlease see.

PDF version [PDF: 2.1MB]

April 22 2024
East Nippon Expressway Co., Ltd.
Kazo Management Office
Yawara Management Office
Saitama Construction Office
Tsukuba Construction Office

NEXCO EAST Kazo Management Office (Kazo City, Saitama Prefecture), Taniwara Management Office (Tsukubamirai City, Ibaraki Prefecture), Saitama Construction Office (Saitama City, Saitama Prefecture), and Tsukuba Construction Office (Tsukuba City, Ibaraki Prefecture) will be carrying out repairs to the pavement and repairs and inspections of road structures on the C4 Ken-o Expressway (hereinafter referred to as the "Ken-O Road") between Satte Interchange (hereinafter referred to as the "IC") and Kozaki IC, as well as implementing night-time road closures to carry out construction work related to the widening to four lanes.
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
    Ken Ken-O Road inside and outside Satte IC - Kanzaki IC
    Section I:
    Satte IC to Sakai-Furukawa IC
    Section II ①:
    Bando IC - Ushikuami IC
    Section II②:
    Joso IC to Ushikuami IC
    Section III:
    Tsukuba Ushiku IC ~ Kanzaki 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
    3. Section I Satte IC to Sakai-Furukawa IC
    Date: May 20th (Mon) to 23rd (Thu), 2024
    Backup dates: May 24th (Fri) - 31st (Fri), 2024    		 Every night from 8pm to 5am the next morning
    *Excluding Saturdays and Sundays
    Section Ⅱ① Bando IC to Ushikuami IC
    Date: June 3rd (Mon) to June 5th (Wed) 2024
    Backup dates: June 6th (Thurs) - 10th (Mon), 2024
    Section Ⅱ② Joso IC - Ushiku-Ami IC
    Implementation Date：2024 Thursday, June 6 - Friday, June 7
    Reserve date: 2024 June 10 (Mon.) - 14 (Fri.)
    Section III Tsukuba Ushiku IC - Kanzaki IC
    Implementation Date：2024 Monday, July 1 - Friday, July 5
    Reserve Dates: 2024 July 8 (Mon.) - 12 (Fri.)
    Image of date and time
    Two-dimensional code image link to NEXCO EAST (Kanto Construction Regulations) X (formerly Twitter) (external link)
    • Section Ⅱ① Section III Rest facilities within the closed sections of the road will be closed as follows:
      Ken-O Road Bando Parking Area (hereinafter referred to as "PA"): Inner loop, Edosaki PA: Inner and outer loop
      Every night from 7pm to 5am 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 the attached sheet below depending on the road closure sections I to III.

Section I

Attachment-1 (I) [PDF: 185KB]

Section Ⅱ①

Attachment-1 (II①) [PDF: 389KB]

Section Ⅱ②

Attachment-1 (II②) [PDF: 359KB]

Section III

Attachment-1 (III) [PDF: 198KB]

Detours will increase the time required, so please take time to go out.

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 of the expressway used.
(See Appendix 2 (I-IV) [PDF: 256KB])

Transfer IC

​Section I: Satte IC to Sakai-Furukawa IC
* May 20th (Mon) to 23rd (Thu)

Closed place Outflow designation IC Re-inflow IC
[Ken-O Road] (Inner loop)
Sakai Koga IC ⇒ Satte IC		 [Ken-O Road]
(Inner loop) Sakai Koga IC, Bando IC		 [Ken-O Road]
(Inner loop) Satte IC, Shiraoka Shobu IC, Okegawa Kano IC
[Tohoku Expressway] (※1)
(In-bound) Hasuda Smart IC (※2), Iwatsuki IC, Urawa IC
(Out-bound) Kuki IC, Kazo IC
[Ken-O Road] (Outer)
Satte IC ⇒ Sakai Koga IC		 [Ken-O Road]
(Outer loop) Satte IC, Shiraoka Shobu IC
[Tohoku Expressway]
(In-bound) Kuki IC
(Out-bound) Hasuda Smart IC (※3), Iwatsuki IC		 [Ken-O Road]
(Outer loop) Sakai Koga IC, Bando IC, Joso IC

※1

Tohoku Expressway ・ ・ ・ Tohoku Expressway

※2

Limited to ETC vehicles of all models (12m or less)

※3

Limited to ETC vehicles of ordinary size and below

《Section Ⅱ①: Bando IC to Ushiku Ami IC》
*June 3 (Mon) to 5 (Wed)

Closed place Outflow designation IC Re-inflow IC
[Ken-O Road] (Inner loop)
Ushikuami IC ⇒ Bando IC		 [Ken-O Road]
(Inner loop) Ushiku Ami IC, Ami Higashi IC		 [Ken-O Road]
(Inner loop) Bando IC, Sakai-Furukawa IC, Goka IC
[Joban Expressway] (※4)
(In-bound) Yatabe IC, Yawara IC, Kashiwa IC
(Out-bound) Sakura-Tsuchiura IC, Tsuchiura Kita IC, Chiyoda Ishioka IC
[Joban Expressway]
(In-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC
(Out-bound line) Yatabe IC, Yawahara IC		 [Ken-O Road]
(Inner loop) Bando IC, Sakai Koga IC, Goka IC
[Ken-O Road] (Outer)
Bando IC ⇒ Ushikuami IC		 [Ken-O Road]
(Outer loop) Bando IC, Sakai Koga IC		 [Ken-O Road]
(Outside) Ushiku Ami IC, Ami Higashi IC, Inashiki IC
[Joban Expressway]
(In-bound line) Yatabe IC, Yawabara IC, Kashiwa IC
(Out-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC, Chiyoda Ishioka IC
[Joban Expressway]
(In-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC
(Out-bound line) Yatabe IC, Yawahara IC		 [Ken-O Road]
(Outside) Ushiku Ami IC, Ami Higashi IC, Inashiki IC

※4

Joban Expressway ・ ・ ・ Joban Expressway

《Section Ⅱ②: Joso IC to Ushikuami IC》
*June 6th (Thursday) and 7th (Friday)

Closed place Outflow designation IC Re-inflow IC
[Ken-O Road] (Inner loop)
Ushiku Ami IC ⇒ Joso IC		 [Ken-O Road]
(Inner loop) Ushiku Ami IC, Ami Higashi IC		 [Ken-O Road]
(Inner loop) Joso IC, Bando IC, Sakai Koga IC
[Joban Expressway]
(In-bound line) Yatabe IC, Yawabara IC, Kashiwa IC
(Out-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC, Chiyoda Ishioka IC
[Joban Expressway]
(In-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC
(Out-bound line) Yatabe IC, Yawahara IC		 [Ken-O Road]
(Inner loop) Joso IC, Bando IC, Sakai Koga IC
[Ken-O Road] (Outside)
Joso IC ⇒ Ushiku Ami IC		 [Ken-O Road]
(Outside) Joso IC, Bando IC		 [Ken-O Road]
(Outside) Ushiku Ami IC, Ami Higashi IC, Inashiki IC
[Joban Expressway]
(In-bound line) Yatabe IC, Yawabara IC, Kashiwa IC
(Out-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC, Chiyoda Ishioka IC
[Joban Expressway]
(In-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC
(Out-bound line) Yatabe IC, Yawahara IC		 [Ken-O Road]
(Outside) Ushiku Ami IC, Ami Higashi IC, Inashiki IC

​Section III: Tsukuba Ushiku IC to Kanzaki IC
*July 1st (Mon) to July 5th (Fri)

Closed place Outflow designation IC Re-inflow IC
[Ken-O Road] (inner loop)
Kanzaki IC⇒Tsukuba Ushiku IC		 [Ken-O Road]
(Inner loop) Kanzaki IC, Shimousa IC		 [Ken-O Road]
(Inner loop) Tsukuba Ushiku IC, Tsukuba Chuo IC, Joso IC
[Joban Expressway]
(In-bound line) Yatabe IC, Yawahara IC
(Out-bound line) Sakura Tsuchiura IC, Tsuchiura Kita IC
[Ken-O Road] (Outer loop)
Tsukuba Ushiku IC⇒Kanzaki IC		 [Ken-O Road]
(Outside) Tsukuba Ushiku IC, Tsukuba Chuo IC		 [Ken-O Road]
(Outside) Kanzaki IC, Shimousa IC
[Higashi Kanto Expressway]
(In-bound line) Narita IC
(Out-bound line) Daiei IC
[Joban Expressway]
(In-bound line) Sakuratsuchiura IC
(Out-bound line) Yatabe IC		 [Ken-O Road]
(Outside) Kanzaki IC, Shimousa IC
[Higashi Kanto Expressway]
(In-bound line) Narita IC
(Out-bound line) Daiei 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. Overview of construction etc.

In addition to repairing the pavement and inspecting road structures, construction work will be carried out on the Ken Ken-O Road between Satte IC and Kanzaki IC, as well as construction work to widen the road to four lanes. In order to minimize inconvenience to customers, the road will be closed at night on weekdays when traffic volume is low, and construction work will be carried out in a concentrated and efficient manner. We ask for your understanding and cooperation so that you can use Expressway safely and comfortably.

  • Between Joso IC and Tsukuba Chuo IC, lane operation will change due to construction work to widen the road to four lanes.
    For details, please refer to Appendix 3 [PDF: 323KB].
Pavement repair work work status photo Image of caption of work status for pavement repair work
Road structure inspection work status photo Road structure inspection Caption image of work status
Photos of construction work for the four-lane construction Image of caption showing construction work for four-lane construction

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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