The latest regulatory information isDraTraPlease see.

PDF version [PDF: 917KB]

NEXCO EAST Tsukuba Construction Office (Tsukuba City, Ibaraki Prefecture) will be closing the outer entrance ramp of Tsukuba Chuo Interchange (hereinafter referred to as "IC") on the C4 Ken-o Expressway (hereinafter referred to as "Ken-O Road") to carry out paving work in connection with the expansion 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. Closed area
   Tsukuba Chuo IC (Outer Loop) Entrance Ramp



• Attached to each line C4 The indications such as indicate the route number (numbering) of Expressway.
2. Date and time
   Implementation date:

   March 23rd (Monday) to March 25th (Wednesday), 2020

   Every day from 20:00 to 6:00 the next morning

   Preparation day:

   Thursday, March 26, 2020 - Friday, April 3, 2020

   Every day from 20:00 to 6:00 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

　迂回にあたっては、別紙-1【PDF：394KB】をご参照ください。
　迂回により所要時間が長くなりますので、お時間にゆとりをもってお出かけください。

3. Construction overview

　圏央道　外回り　つくば中央ICにおいて、4車線化に伴うIC改築工事を実施します。お客さまへ極力ご迷惑をおかけしないよう、交通量が少ない平日夜間にランプ閉鎖を行い、工事等を集中的かつ効率的に実施します。安全・快適に高速道路をご利用いただくため、ご理解とご協力をお願いします。
　詳細は別紙-2【PDF：148KB】をご確認いただきますようお願いします。

Four. How to obtain traffic information

(1) Guidance by distribution / posting

• Posters and flyers will be posted at nearby toll booths and rest areas.
• 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

  https://www.drivetraffic.jp/

  Construction regulation information

  https://www.drivetraffic.jp/construction-regulation
• 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
  ホームページ　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.
• 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

To view the PDF file, you need the Adobe Systems plug-in software "Acrobat Reader (Japanese version)". If you do not have​​​ Download from here (free)Please use it.