[E4] Between Ikarigaseki IC on the Tohoku Expressway
Implemented all-day face-to-face traffic regulation due to bridge renewal work

The latest regulatory information isDraTraPlease see.

PDF version [PDF: 719KB]

NEXCO EAST Aomori Management Office (Aomori City, Aomori Prefecture) is located on the Hirakawa Bridge, located between the Ikarigaseki Interchange (IC) and the Owani Hirosaki IC on the E4 Tohoku Expressway. At the Hirakawa Bridge and Fudogawa Bridge, the section of 2 lanes on each of the upper and lower lines will be reduced to 1 lane for the construction to replace the old reinforced concrete slab with a new slab. , All-day face-to-face traffic restrictions will be enforced from May 30 (Monday).
We apologize for any inconvenience caused to our customers, but if you drive on the section, please try to drive more safely and leave with plenty of time.
Renewal work is necessary to use the Expressway safely and securely. We will do our best to minimize the inconvenience to our customers, so we ask for your understanding and cooperation.

◆Construction image photograph

1. 1. Traffic regulation section

Tohoku Expressway and Owani Hirosaki IC (upper and lower lines)

2. Traffic regulation period

1. Traffic regulation period
   May 20th (Friday) -November 18th (Friday) (183 days)
   (* The Ajara parking area (PA) (Out-bound line) will be closed all day from May 20th (Friday) to November 8th (Tuesday), 4th year of Reiwa.)

• Saturday, Sunday and public holidays are also regulated throughout the day.
• The traffic regulation period may change depending on the progress of construction.

3. 3. Traffic regulation contents

For the floor slab replacement work, the section of each of the two lanes on the upper and lower lanes will be reduced to one lane each, and will be consolidated on one side to implement two-way traffic restrictions throughout the day. During the first and last few days of the construction period, lane restrictions will be applied to both the upper and lower lanes as a preparatory work for switching lanes.

◆Image of lane regulation and two-way traffic regulation

Four. Construction content

About 40 years have passed since the opening of Hirakawa Bridge, Kamihirakawa Bridge and Fudogawa Bridge, which are located between Ikarigaseki IC and Owani Hiromae IC on the Tohoku Expressway. Due to the salt content of the antifreeze spray, deterioration of the concrete deck and rust on the reinforcing bars, it is necessary to carry out drastic anti-aging work.
By replacing the deteriorated existing concrete deck with a new deck, it will be reborn as a safe and comfortable Expressway.

◆ Construction overview

Five. Request when using

1. The construction section will be restricted to face-to-face traffic throughout the day for approximately 5.8km. We do not anticipate the occurrence of traffic jams, but when using the section, please try to drive safely and go out with plenty of time.
2. Since the driving lane and shoulders are narrow in the two-way traffic restricted section, please observe the regulated speed when driving, secure the inter-vehicle distance, and be careful about rear-end collisions. In addition, the lanes will change significantly before and after the two-way traffic regulation section, so please follow the local information signs.
3. Vehicles for construction work may enter and leave the area around the construction site, so please be careful when traveling ahead.
4. During the construction period, we will provide traffic congestion information using LED information boards, provide construction regulation information using road information boards and road signs, and call attention to driving safely. Please check this information before driving and drive safely.
5. During the construction period, Agara PA (Out-bound line) cannot be used. Please use Kosaka PA or Tsugaru Service Area (SA).

◆ Photograph of information provided around the construction site

6. Efforts to minimize inconvenience to customers due to construction work

[Adoption of precast products for the purpose of shortening the construction period and improving quality]
By adopting a precast PC floor slab, the construction period is shortened and the regulation period is shortened.
* Precast is to manufacture products in advance at factories, etc.

[Advance notice of construction regulations and traffic jam information by construction website, signboard, etc.]
We will inform you in advance of the regulation contents by means of construction websites, signboards, banners, etc., mainly in the Tohoku region.

[Notice image] * This is a public relations material for the renewal work carried out in the 3rd year of Reiwa.

7. How to obtain traffic information

• DraPla", a site full of useful information on Expressway nationwide
  【address】
  PC version (https://www.driveplaza.com/)
  Mobile version (http://m.driveplaza.com/)
  Smartphone version (http://www.driveplaza.com/smp/)
• Expressway traffic information service "Drive Traffic (DraTra)"
  (https://www.drivetraffic.jp/construction-regulation)
  It provides real-time road traffic information and traffic congestion prediction.
  【address】
  PC version (https://www.drivetraffic.jp/)
  Mobile version (http://m.drivetraffic.jp/)
  Smartphone version (http://www.drivetraffic.jp/smp/)
• NEXCO東日本お客さまセンター
  24時間365日オペレーターが応対いたします。
  【電話番号】
  0570-024-024（ナビダイヤル）　または　03-5308-2424
• 日本道路交通情報センター（JARTIC）
  【電話番号】
  全国共通ダイヤル　050-3369-6666　（携帯短縮ダイヤル　#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。
  青森情報　050-3369-6602
  東北地方高速情報　050-3369-6761
• Highway radio
  Highway radio (AM1620kHz)
  The section that is broadcasting is indicated by the sign on Expressway.
• Highway Information Terminal
  Wide-area road traffic information is notified on the monitor screen installed in SA / PA.
• Official Twitter account
  "NEXCO EAST (Tohoku)" (@e_nexco_tohoku) Provides information on Expressway in the Tohoku region.