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[C4] Ken-o Expressway and Outer Loop, Kanzaki IC to Daiei JCT
Nighttime road closure notice

~Construction work to widen the road to four lanes will be carried out~

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  • [C4] Notice of nighttime road closure between Kanzaki IC and Daiei JCT on the inner and outer loop Ken-o Expressway
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PDF version [PDF: 1.7MB]

December 24, 2020
East Nippon Expressway Co., Ltd.
Tsukuba Construction Office

NEXCO EAST Tsukuba Construction Office (Tsukuba City, Ibaraki Prefecture) will be implementing a nighttime road closure between Kozaki Interchange (hereinafter referred to as "IC") and Taiei Junction (hereinafter referred to as "JCT") on the C4 Ken-O Road Ken-o Expressway (hereinafter referred to as "Ken-O Expressway") to carry out paving work in connection with the widening of the road 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 going out.

1. Closed section and date and time

  1. Road closure section:
    Ken-O Road and Outer Loop Kanzaki IC to Daiei JCT
    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
    Implementation date:
    January 26th (Monday) to January 30th (Friday), 2020
    Every day from 8pm to 5am the next morning
    Preparation day:
    February 2nd (Monday) to February 6th (Friday), 2020
    Every day from 8pm to 5am the next morning
Image of date and time
Two-dimensional code image link to NEXCO EAST (Kanto Construction Regulations) X (formerly Twitter) (external link)
  • 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 Appendix 1 [PDF: 516KB].
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 same direction, we will implement a "transfer adjustment" in which the toll will be adjusted according to the section of the expressway they are using. (See Appendix 2 [PDF: 408KB])

Transfer IC

Closed place Outflow designation IC Re-inflow IC
[Ken-O Road] Inner Loop
Daiei JCT ⇒ Kanzaki IC		 [Higashi-Kanto Expressway] In-bound
Daiei IC, Sawara Katori IC *1
[Higashi-Kanto Expressway] Out-bound
Narita IC, Tomisato IC		 [Ken-O Road] Inner Loop
Kanzaki IC, Inashiki Higashi IC *1, Inashiki IC
[Ken-O Road] Outer Loop
Kanzaki IC ⇒ Daiei JCT		 [Ken-O Road] Outer Loop
Kanzaki IC, Inashiki Higashi IC *1		 [Higashi-Kanto Expressway] In-bound
Narita IC, Tomisato IC, Shisui IC
[Higashi-Kanto Expressway] Out-bound
Daiei IC, Sawara Katori IC *1
  • Higashi Kanto Expressway ・ ・ ・ Higashi-Kanto Expressway
  1. Sawara Katori IC and Inashiki Higashi IC are ETC-only toll gates, but can also be used by non-ETC vehicles as designated exit and re-entry ICs when roads are closed. If you are using Sawara Katori IC or Inashiki Higashi IC in a non-ETC vehicle, please use the lane marked "support," stop temporarily, and follow the instructions of local signs and staff.

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

Paving work will be carried out to widen the road to four lanes Ken-O Road outer loop between Kanzaki IC and Daiei JCT. To minimize inconvenience to customers, road closures will be implemented during the night on weekdays when traffic volume is low, and work will be carried out intensively and efficiently. We ask for your understanding and cooperation so that you can use Expressway safely and comfortably.

  • Between Kanzaki IC and Daiei JCT, lane operation will be changed due to construction work to widen the road to four lanes.
    For details, please refer to Appendix 3 [PDF: 485KB].
Road cutting work - photos of work in progress Image of caption for road cutting work
Photos of road marking removal work Image of caption for road marking removal work

Five. How to obtain traffic information

(1) Guidance by distribution / posting

  • Posters and leaflets will be displayed at nearby toll gates and rest facilities.
  • 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.
  • 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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