[C4] Ken-o Expressway and outer loop, between Bando IC and Inashiki IC
Nighttime road closure notice
~Construction work to widen the road to four lanes will be carried out~
- Corporate Top
- Press Room
- Press Release Kanto Regional Head Office
- [C4] Notice of nighttime road closure on the inner and outer loop Ken-o Expressway between Bando IC and Inashiki IC
The latest regulatory information is DraTra Please see.
January 17, 2025
East Nippon Expressway Co., Ltd.
Tsukuba Construction Office
NEXCO EAST Tsukuba Construction Office (Tsukuba City, Ibaraki Prefecture) will be implementing night-time road closures between Bando Interchange (hereinafter referred to as "IC") and Inashiki Interchange on the C4 Ken-o Expressway (hereinafter referred to as "Ken-O Ken-O Road") to carry out paving work to widen 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 heading out.
1. Closed section and date and time
- Closed section: Ken-O Road and Outer Loop, Bando IC to Inashiki ICSection Ⅰ①:Bando IC to Joso ICSection Ⅰ②:Bando IC to Tsukuba Chuo ICSection II ①:Tsukuba Ushiku IC to Inashiki ICSection II②:Amihigashi IC to Inashiki IC
- Attached to each line C4 The indications such as indicate the route number (numbering) of Expressway.
- Date and time

Section Ⅰ① | Bando IC to Joso IC Date: February 17th (Mon) to 20th (Thu), 2025 Backup dates: Friday, February 21, 2025 - Monday, March 3, 2025 |
Every night from 8pm to 5am the next morning *Excluding Saturdays, Sundays and public holidays |
Section Ⅰ② | Bando IC to Tsukuba Chuo IC Date: Friday, February 21, 2025 Backup dates: Tuesday, February 25, 2025 to Monday, March 3, 2025 |
|
Section Ⅱ① | Tsukuba Ushiku IC to Inashiki IC Date: March 10th (Mon) - 11th (Tue), 2025 Backup dates: March 12th (Wed) - 24th (Mon), 2025 |
|
Section Ⅱ② | Amihigashi IC to Inashiki IC Date: Wednesday, March 12th to Friday, March 14th, 2025 Backup dates: March 17th (Mon) - 24th (Mon), 2025 |


- Parking areas (hereinafter referred to as "PA") within the road closure sections will be closed as follows:
Ken-O Road Bando PA: Inner loop, Edosaki PA: Inner and outer loop, 7pm to 5am each day - In the event of bad weather, the tour will be postponed to the reserve day. If Section I① and Section II① are postponed to the reserve day, Section I② and Section II② will also be postponed to their respective reserve days.
- 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: 2.4MB].
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 of the expressway used.
(See [Attachment 2] [PDF: 1.1MB])
Transfer IC
< Section I①: Bando IC to Joso IC>
*February 17th (Monday) to 20th (Thursday)
Closed place | Outflow designation IC | Re-inflow IC |
---|---|---|
[Ken-O Road] Inner loop Joso IC⇒Bando IC (From Tsukuba area to Hachioji area) |
[Ken-O Road] Inner loop Joso IC, Tsukuba Chuo IC |
[Ken-O Road O Expressway] Inner loop Bando IC, Sakai-Koga IC, Goka IC |
[Ken-O Road] Outer loop Bando IC⇒Joso IC (From Hachioji area to Tsukuba area) |
[Ken-O Road O Expressway] Outer Bando IC, Sakai-Koga IC |
[Ken-Ken-O Road] Outer loop Joso IC, Tsukuba Chuo IC, Tsukuba Ushiku IC [Joban Expressway] (※) In-bound line Yatabe IC [Joban Expressway] Out-bound Sakura Tsuchiura IC |
- Joban Expressway... Joban Expressway
< Section I②: Bando IC to Tsukuba Chuo IC>
*Friday, February 21st
Closed place | Outflow designation IC | Re-inflow IC |
---|---|---|
[Ken-Ken-O Road] Inner loop Tsukuba Chuo IC ⇒ Bando IC (From Tsukuba to Hachioji) |
[Ken-Ken-O Road] Inner loop Tsukuba Chuo IC, Tsukuba Ushiku [Joban Expressway] In-bound Sakura Tsuchiura IC [Joban Expressway] Out-bound Yatabe IC |
[Ken-O Road O Expressway] Inner loop Bando IC, Sakai-Koga IC, Goka IC |
[Ken-Ken-O Road] Outer loop Bando IC ⇒ Tsukuba Chuo IC (From Hachioji to Tsukuba) |
[Ken-O Road O Expressway] Outer Bando IC, Sakai-Koga IC |
[Ken-Ken-O Road] Outer loop Tsukuba Chuo IC, Tsukuba Ushiku IC, Ushiku Ami IC [Joban Expressway] In-bound Yatabe IC, Yawara IC [Joban Expressway] Out-bound Sakura Tsuchiura IC, Tsuchiura Kita IC |
< Section II①: Tsukuba Ushiku IC - Inashiki IC>
*March 10th (Monday) to 11th (Tuesday)
Closed place | Outflow designation IC | Re-inflow IC |
---|---|---|
[Ken-Ken-O Road] Inner loop Inashiki IC ⇒ Tsukuba Ushiku IC (From Daiei towards Tsukuba) |
[Ken-Ken-O Road] Inner loop Inashiki IC, Inashiki East IC |
[Ken-Ken-O Road] Inner loop Tsukuba Ushiku IC, Tsukuba Chuo IC, Joso IC [Joban Expressway] In-bound Yatabe IC, Yawara IC [Joban Expressway] Out-bound Sakura Tsuchiura IC, Tsuchiura Kita IC |
[Ken-Ken-O Road] Outer loop Tsukuba Ushiku IC ⇒ Inashiki IC (From Tsukuba to Daiei) |
[Ken-Ken-O Road] Outer loop Tsukuba Ushiku IC, Tsukuba Chuo IC [Joban Expressway] In-bound Sakura Tsuchiura IC [Joban Expressway] Out-bound Yatabe IC |
[Ken-Ken-O Road] Outer loop Inashiki IC, Inashiki Higashi IC, Kanzaki IC |
< Section Ⅱ②: Ami Higashi IC to Inashiki IC>
*March 12th (Wednesday) - 14th (Friday)
Closed place | Outflow designation IC | Re-inflow IC |
---|---|---|
[Ken-Ken-O Road] Inner loop Inashiki IC ⇒ Amihigashi IC (From Daiei towards Tsukuba) |
[Ken-Ken-O Road] Inner loop Inashiki IC, Inashiki East IC |
[Ken-Ken-O Road] Inner loop Ami Higashi IC, Ushiku Ami IC, Tsukuba Ushiku IC |
[Ken-Ken-O Road] Outer loop Amihigashi IC ⇒ Inashiki IC (From Tsukuba to Daiei) |
[Ken-Ken-O Road] Outer loop Ami Higashi IC, Ushiku Ami IC |
[Ken-Ken-O Road] Outer loop Inashiki IC, Inashiki Higashi IC, Kanzaki 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
Ken-O Road Pavement work will be carried out between the Bando IC and Inashiki IC on the inside/outside route, in conjunction with the four-lane roadway conversion. In order to minimize inconvenience to our customers, we will close the road during the nighttime on weekdays when traffic volume is low, and implement the construction work in an intensive and efficient manner. We ask for your understanding and cooperation in order for you to use Expressway safely and comfortably.
- Between Bando IC and Joso IC, and between Ami Higashi IC and Inashiki IC, lane operation will be changed due to construction work to widen the road to four lanes.
For details, please refer to [Attachment 3] [PDF: 783KB].




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
- NEXCO東日本お客さまセンター(24時間オペレーターが対応)
ナビダイヤル:0570-024-024
または:03-5308-2424 - NEXCO EAST Expressway Traffic Information Site "DraTra"Real-time information[Mobile] http://m.drivetraffic.jp/Construction regulation information
- 日本道路交通情報センター(JARTIC)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。
全国・関東甲信越情報 050-3369-6600
埼玉情報 050-3369-6611
茨城情報 050-3369-6608
千葉情報 050-3369-6612
【PC】https://www.jartic.or.jp/
(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 (formerly Twitter)]
"NEXCO EAST (Kanto)" ( @e_nexco_kanto )Real-time traffic information"NEXCO EAST (Kanto construction regulations)" ( @e_nexco_kanto_k )Judgment of implementation of construction regulations - [LINE]
"NEXCO EAST" (@e-nexco)Road closures and weather information
- [X (formerly Twitter)]

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