[E18] Joshin-Etsu Expressway / [E19] Nagano Expressway
Notice of renewal construction schedule

The latest regulatory information isDraTraPlease see.

PDF version [PDF: 5.7MB]

NEXCO EAST Nagano Construction Office (Nagano, Japan) is pleased to announce that Expressway renewal work will start in May 2024 at E18 Joshin-Etsu Expressway ("Joshinetsu Road") and E19 Nagano Expressway ("Nagano Road") in Nagano Prefecture.
The construction work to be started in August or later will be announced later.
Please note that lane restrictions will be enforced and the number of lanes will be reduced as follows.
The renewal work is necessary for the safe and secure use of Expressway. We will work to minimize inconvenience to our customers, and we ask for your understanding and cooperation.

1. Location Map/Traffic Regulation Schedule

【supplement】

• The period of traffic restrictions may change depending on the progress of construction work.
• Please check the latest traffic information before departure, as actual traffic conditions may differ from forecasts due to accidents, weather, etc.

2. Construction details

The content of construction number ① is to replace the concrete floor slabs that have been damaged due to aging and the increase in large vehicles with new, more durable concrete floor slabs.

Floor slab replacement work image photo

• The photo is an example of floor slab replacement work at Onikuma Bridge (upper and lower lines) on Nagano Expressway.

The work indicated by number ② is to reinforce the road surface against the upheaval and damage caused by the expansion of the ground in the tunnel. In order to make the ring-shaped structure stronger for the tunnel, which is subject to excessive force from the ground, an invert will be installed to improve stability.

• What is an invert? The bottom of the tunnel is connected to an inverted arch using concrete, increasing the strength and preventing subsidence and deformation.

Image photo of tunnel reinforcement work

3. Requests when using

1. The construction section will be closed to traffic throughout the day. In some sections, traffic congestion is predicted starting at the construction site, so please leave with plenty of time to spare.
2. Since the lanes and road shoulders are narrow, please observe the speed limit when driving, secure a distance between vehicles, and be careful of rear-end collisions. In addition, lanes will change significantly before and after the restricted section, so please follow the local guidance 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, traffic congestion may cause traffic congestion. Before heading out, please check the latest lane regulations and traffic information on the websites listed in "4. How to get traffic information." Also, please allow yourself plenty of time when traveling.
5. During the construction period, we will provide congestion information using LED information boards, provide information on construction regulations using road information boards and road signs, and call for caution for safe driving. Please check these information before driving, and please drive safely.

Image of information provision image around the construction site

Four. How to obtain traffic information

(1) Guidance by distribution / posting

• Information on posters, leaflets and digital signage will be posted at nearby tollhouses, SA / PA.
• A banner will be posted on the overpass on the Expressway.

(2) Road traffic information that can be obtained before going out

• Expressway renewal project website
• NEXCO EAST Expressway Traffic Information Site "DraTra"
  Real-time information

  [PC] https://www.drivetraffic.jp/

  [Mobile] http://m.drivetraffic.jp/

  Construction regulation information

  [PC] https://www.drivetraffic.jp/construction-regulation
• NEXCO東日本お客さまセンター
  ナビダイヤル　0570-024-024（24時間オペレーターが対応）
  または　03-5308-2424
• 日本道路交通情報センター（JARTIC）の道路交通情報
  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。
  全国・関東甲信越情報　050-3369-6600
  長野情報　050-3369-6620
  【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
  Wide-area road information is provided in an easy-to-understand manner on the monitor screens installed in SA / PA.

• 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