[E19] Nagano Expressway Out-bound, between Azumino IC and Omi IC
Notice of all-day lane closures due to tunnel renovation work.

The latest regulatory information isDraTraPlease see.

PDF version [PDF: 1.4MB]

NEXCO EAST Nagano Construction Office (Nagano City, Nagano Prefecture) will implement all-day lane restrictions on the Out-bound line between Azumino Interchange (hereafter "IC") and Omi IC on E19 Nagano Expressway (hereafter "Nagano Expressway") due to the renewal work of the aging Akashina Tunnel. We apologize for any inconvenience this may cause and ask for your compliance with speed limits and cooperation in driving safely within the restricted section.
Additionally, lane restrictions are expected to cause congestion. For customers planning to use the affected section, please check traffic information on websites such as "DraTra," change your usage time, and allow extra time to allow extra time. This construction is necessary to ensure safe and comfortable use of Expressway, so we ask for your understanding and cooperation.

1. 1. Overview of lane regulations

Construction image photo (past construction)

Lane restrictions apply to the Nagano Expressway Out-bound lane, from Azumino IC to Omi IC.

1. Tunnel renewal work is also being carried out in the Ipponmatsu Tunnel (In-bound) between Koshoku IC and Omi IC. Please check the link below for details.
   【E18】上信越自動車道および【E19】長野自動車道　トンネル・橋りょうリニューアル工事による終日・車線規制のお知らせ

Lane regulation schematic diagram

When driving, please follow local signs, etc., and drive safely.

• Restriction duration: Approximately 5.0 km

2. Lane restriction period

Restriction period:
Monday, October 19, 2020 - Friday, November 20, 2020

• Lane restrictions will be in place all day, including weekends and public holidays.
• Traffic congestion is expected during the restricted period. To help alleviate congestion, we ask for your cooperation in avoiding peak hours.
• The restriction period may change depending on the weather, work progress, etc.
• Actual traffic conditions may differ from predictions due to accidents or weather conditions, so please check the latest traffic information before departing.
• We plan to continue lane restrictions throughout the day in this section in subsequent years. Further details will be announced separately.

3. Requests for special vehicles

Due to the traffic restrictions, special vehicles exceeding 3.0m in width will not be permitted to pass through this area all day and during the lane closure period. Customers are requested to use alternative routes such as surrounding roads.
Also, please note that if you have obtained a special vehicle permit ^(*) only for Expressway routes, you will also need to obtain a permit for general roads.

• What is special vehicle passage permission?
  Based on the Road Law and the Vehicle Restriction Ordinance, this is a permit required for special vehicles that exceed general restrictions (length, weight, vehicle width, etc.) to pass on public roads.

4. Overview of tunnel reinforcement work

At the Akashina Tunnel located between Azumino IC and Magi IC on the Nagano Expressway Out-bound Line⇒ we will carry out tunnel reinforcement work to address road surface heaving and damage caused by the expansion of the surrounding earth. This work is necessary to ensure safe and comfortable use of the Expressway, so we ask for your understanding and cooperation.

• インバートとは...
  トンネル底面をコンクリートにより逆アーチに結合するもので、耐力を増加させ、沈下・変状を防止します

Main work contents

To improve the stability of tunnels subjected to excessive stress from the surrounding area, a concrete invert will be installed to create a stronger, ring-shaped structure. After excavating the road surface, the invert will be installed to reinforce the tunnel bottom, and then paving work will be carried out to return the road to a drivable state.

Five. Request when using

1. Due to construction work, lane restrictions will be in place on Out-bound lanes all day, reducing the number of lanes in each direction from the current two lanes to one. Because the lane width will be narrower in the lane-restricted section, please observe the speed limit, maintain a safe following distance, and take extra care to avoid rear-end collisions. Also, please be aware that lane positions may change as the construction progresses.
2. Construction vehicles may come and go around the construction site, so please be careful when driving ahead.
3. During the restricted period, traffic congestion may cause slower traffic flow. Before you go out, please check the latest lane restrictions and traffic information on the websites listed in "6. How to obtain traffic information". Also, please allow extra time for your journey.
4. During the construction period, we will use LED information boards and road signs to provide construction regulation information and call attention to driving safely. Please check this information before driving and drive safely.

6. How to obtain traffic information

(1) Guidance by distribution / posting

• Digital signage will be posted at nearby toll booths, service areas, and parking areas.

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

• Expressway renewal project website
  • A dedicated webpage for this construction project will be created at a later date.
• NEXCO EAST Expressway Traffic Information Site "DraTra"
  Real-time information

  https://www.drivetraffic.jp/

  Construction regulation information

  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
  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.

• Information is also distributed through official accounts on X (formerly Twitter) and LINE.
  [X (old Twitter)]
  "NEXCO EAST (Kanto)" (@e_nexco_kanto) Expressway information
  "NEXCO EAST (Kanto Construction Regulations)" (@e_nexco_kanto_k) Decision on implementation of construction restrictions
  [LINE]
  "NEXCO EAST" (@e-nexco) Road closures and weather information