Expressway renewal project
E4Tohoku Expressway Towada IC Tomakosaka IC (up and down line)
~ Efforts to make long-term use of aging Expressway safe ~
Why construction is necessary
Expressway renewal project is a drastic repair such as rebuilding a bridge on an Expressway damaged by aging or an increase in large vehicles. Long-term traffic restrictions will occur compared to ordinary construction, but since construction is performed using the latest technology compared to the time of construction, functions can be improved and life can be extended.
Reason why renewal project is necessary
In addition to the age, the severe use environment is causing deterioration. In order to continue to play a role as an aorta supporting the social infrastructure such as economy, society, medical care, disaster prevention, drastic repair is necessary because it can not be improved by repetition of partial repair so far.
Current State of Expressways
Aged deterioration (aging with elapsed years)
As the graph below shows, at the moment there are few roads over 50 years since opening.
The percentage is expected to reach 20% in 2030 and to exceed 70% in 2050.
Severe operating environment (factor of aging)
In addition to aging accompanying elapsed years, the aging of roads is proceeding due to the increase in heavy-duty traffic volume, the increase in total vehicle weight, the spraying of anti-freezing agents, etc.
Construction section:E4Tohoku Expressway Towada IC-Kosaka IC (up and down line)
All day lane regulation (up and down)
All day face-to-face regulation (up and down)
* Work may be postponed in bad weather.
Deteriorated existing concrete slab deck※Is replaced with a new floor slab, and it will be reborn as a Expressway that can be used safely and comfortably. In addition, tunnel flaking countermeasure work and back cavity injection work will be implemented together to improve work efficiency and reduce costs.
※ The deck is a structural member that directly supports a car passing through a bridge and transmits the load to the girder.
Replacement work on the deck
Tunnel repair work
|from now on
Scheduled renewal work between Ashiro IC and Kasumigaseki IC after 2020
Period and facing traffic regulation enforcement section
* Details will be announced as soon as details are determined.
During the renewal work, the two lanes on the upper and lower lanes will be reduced to one lane and consolidated on one side to implement day-to-day traffic restrictions. For the first few days at the start and end of the construction period, all-day lane restrictions on the upper and lower lines will be imposed as preparation work for switching lanes.
We will implement a construction method that can suppress the impact on traffic as much as possible, such as face-to-face traffic regulations that ensure traffic in both directions without stopping traffic.
Face-to-face traffic regulation status
Points to note when using
Since traffic congestion is expected, please go out with plenty of time.
In the traffic regulation section, the maximum speed is limited to 50 km / h.
Please get the traffic information in advance and have some time to spare.
Please cooperate in early lane change before the confluence section.
When traffic jam occurs, please cooperate to prevent rear-end accidents by lighting the hazard lamp at the end and signaling the following car.
Since there are entrance and exit of construction vehicles in the vicinity of the construction site, please keep in mind that you pay attention to the front.
During the construction period, we will provide construction regulation information utilizing road information boards, road signs, easy information boards and call for attention to ensure safe driving. Please check this information when traveling and thank you to travel safely.
Information providing image around the construction site Photo
※ The picture is the information provision situation inside the Tohoku Regional Head Office .
Inquiries concerning Expressway information
NEXCO EAST Customer Center
0570-024-024 or 03-5338-7524
We are listening to customers' opinions 24 hours a day, 365 days a year.
Twitter Official Account " NEXCO EAST (Tohoku)"（@e_nexco_tohokuEven
We deliver real-time traffic conditions.
Update every 5 minutes / 24 hours OK traffic information dial highway telephone
Mobile phone only dial# 8162(Connect to the nearest region)
※ Highway Telephone notifies you of the latest Expressway traffic information (updated every 5 minutes) for 24 hours.
Inquiry of road traffic information
Japan Road Traffic Information Center nationwide uniform number050-3369-6666
Mobile abbreviated dial (for mobile phones / PHS only) # 8011
Nationwide high-speed dial (auto response only) 050-3369-6700
Road Emergency Dial#9910
Please listen to the highway radio (1620 kHz) for road traffic information while driving.
Also, the SA / PA near youPlease also use Highway Information Terminal.
- 10月25日 [E4] Notification of Tohoku Expressway Towada IC-Kosaka IC renewal completion
- 8月29日 We started face-to-face traffic regulations all day.
- 8月19日 We started regulation all day lane.
- 7月19日 【E4】 Tohoku Expressway Between Towada IC and Kosaka IC Implemented all-day meeting traffic restriction by renewal work