The latest regulatory information is DraTraPlease see.

• PDF version [PDF: 779KB]

NEXCO EAST Koriyama Management Office (Koriyama City, Fukushima Prefecture) E4 Tohoku Expressway At the No. 1 Kumatogawa Bridge located between the Shirakawa Interchange (IC) and the Sukagawa IC, a vertical slab is installed to replace the deteriorated reinforced concrete slab with a new slab. We will reduce the section of each 2 lanes to 1 lane and implement face-to-face traffic regulation that consolidates on one side from Thursday, September 24th throughout the day.
The construction will reduce the number of lanes that can be driven from 2 lanes to 1 lane, so Tohoku Expressway Around the Shirakawa IC-Sukagawa IC area, the maximum length of the In-bound line is about 2 km (passage time is about 10 minutes), and the Out-bound line is about 4 km (passage time is about 20 minutes). Is predicting congestion.
We apologize for the inconvenience, but if you drive in the relevant section, please make further efforts to drive safely and be sure to leave enough time before using the vehicle. Also, For customers who are planning to use the construction section on the day when a traffic jam is predicted, for customers to bypass Joban Expressway, use Expressway via general road, Please change the IC used or use public transportation.
Expressway This is a necessary work to keep the network function healthy for a long time. We will do our best to minimize the inconvenience to our customers, and we ask for your understanding and cooperation.

◆Construction image photograph

1. Tohoku Expressway Shirakawa IC-Sukagawa IC (upper and lower lines)

2. Traffic regulation period and traffic congestion prediction

(1) Traffic regulation period 2020 Sept. 24 (Thu) to Nov. 8 (Sun) << 46 days >>

• We will also work on Saturdays, Sundays, and holidays.
• Work may be postponed in bad weather.
• The face-to-face traffic regulation date may change depending on the progress of construction.

(2) Congestion Forecast

During the construction period, traffic is expected to be up to 4km on weekends and 20 minutes to pass.

・Sukagawa IC → Shirakawa IC (In-bound line)

・Shirakawa IC → Sukagawa IC (Out-bound line)

• In the regulation according to the present construction, the beginning of the construction work place, congestion (In-bound line up to about 2km passing time about 10 minutes, Out-bound line up to about 4km transit time about 20 minutes), so we have to predict, congestion occurrence prediction Date For customers planning to use the construction section in question, please make a detour to the Joban Expressway, use the Expressway via the general road, change the IC used, and use public transportation. I will.

3. Traffic restrictions

In the floor slab replacement work, we will reduce the section of each two lanes of up and down lines to one lane and consolidate it on one side to enforce face-to-face traffic all day. For the first few days at the start and end of the construction period, both the upper and lower lanes will be regulated all day as a preparatory work to switch lanes. *Please refer to the attached document [PDF: 319KB] for the construction regulation step diagram.

◆Image of lane regulation and two-way traffic regulation

Four. Construction content

The first Kumatogawa Bridge located between the Yabuki IC and the Sukagawa IC on the Tohoku Expressway (upper and lower lines) has been in operation for about 47 years, and due to the increase in size of the vehicle, repeated wheel loads have caused repeated cracks and small cracks. Deterioration of concrete floor slabs and rust on reinforcing bars are caused by the salt content of the anti-freezing agent spraying, so it is necessary to implement drastic measures against deterioration.
By replacing the deteriorated existing concrete slab with a new slab, it will be reborn as a Expressway that is safe and comfortable to use.

◆ Construction overview

Five. Request when using

1. The construction section is restricted to face-to-face traffic throughout the day for approximately 2.7 km. We are reducing the current one lane from two lanes to one lane, and we are predicting traffic congestion (up to about 2km on the In-bound line, up to about 4km on the Out-bound line), starting from the construction site. Please go out with plenty of time.
2. Since the driving lanes and shoulders are narrow in the two-way traffic regulation section, please observe the regulation speed when traveling and secure a sufficient distance between vehicles to be careful of rear-end collisions. In addition, the lanes change significantly before and after the two-way traffic regulation section, so please follow the local 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 simple information boards, construction regulation information using road information boards and road signs, and call for caution to drive safely. Please check this information before riding and drive safely.

◆ Photograph of information provided around the construction site

• The photo shows information provided by the Tohoku Regional Head Office.

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

Use of precast products for shortening the construction period and improving quality

By adopting a precast PC floor slab, the construction period is shortened compared to usual, and the regulation period is shortened to the maximum.
*Precast is a product manufactured in advance at a factory.

Advance notice of construction regulations and congestion information through TV commercials, radio commercials, newspaper advertisements, etc.

Mainly in the Tohoku region, we will inform you of the regulations in advance through TV commercials, radio commercials, newspaper advertisements, etc.

Information image

* 2020 Publicity material for the renewal work that was carried out in the spring.

7. How to obtain traffic information

(1) Road traffic information available before going out