The latest regulatory information isDraTraPlease see.

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NEXCO EAST At the Yamagata Management Office (Yamagata City, Yamagata Prefecture), from E48 Yamagata Expressway (hereinafter referred to as "Yamagata Road") Sagae Interchange (hereinafter referred to as "IC") to Gassan IC and E13 Tohoku-Chuo Expressway (hereinafter referred to as "Tohoku Chuo Expressway") From Yamagata Kamiyama IC to Nanyo Takahata IC, we will implement a night closure to inspect tunnel emergency equipment.
We apologize for any inconvenience this may cause to our customers, but we ask for your understanding and cooperation so that you can have plenty of time when you go out.

1. Closed section and date and time

1. Closed section
   Closed section ①:

   Yamagata Expressway Out-bound Sagae IC ⇒ Gassan IC

   

   Closed section ②:

   Tohoku Chuo Expressway, In-bound: Yamagata-Kaminoyama IC ⇒ Nanyo-Takahata IC

   

   • The signs such as E13 attached to each route indicate the route number (numbering) of Expressway, etc.
2. Date and time
   • Road closure section ①:
     Yamagata Expressway Out-bound Sagae IC to Gassan IC
     Implementation date:

     令和8年5月11日（月）夜23時～翌朝5時

     Preparation day:

     令和8年5月12日（火）夜23時～翌朝5時
   • Road closure section ②:
     Tohoku Chuo Expressway, In-bound: Yamagata-Kaminoyama IC ⇒ Nanyo-Takahata IC
     Implementation date:

     令和8年5月13日（水）夜23時～翌朝6時

     Preparation day:

     令和8年5月14日（木）夜23時～翌朝6時

Usage Guide

2. Detour

For information on alternative routes, please refer to Attachment-1 [PDF: 142KB]and Attachment-2 [PDF: 179KB].
The detour will increase your travel time, so please allow ample time for your journey.

3. Regarding transit adjustments due to suspension of traffic

Road closure section ②:
Yamagata-Kaminoyama IC ⇒ Nanyo-Takahata IC (In-bound)
For customers who exit Expressway due to a road closure, detour around the closed section, and then re-enter to continue their journey in the same direction, a "transfer adjustment" will be implemented to adjust the toll based on the section of the expressway used. (See Attachment-3 [PDF: 107KB])

How to use transit adjustment

ETC customers

• For customers using ETC, please drive wirelessly at designated outflow ICs, and also wirelessly drive at re-inflow ICs. (Transfer certificates are not issued for ETC vehicles)
• ETC time zone discount will be applied, considering the transited journey as one.
  Toll charges are adjusted at the time of billing, so they may differ from those displayed at the toll gate.
• Insert the same ETC card for all journeys and pass through the ETC lane at the tollgate.

Customers such as cash

• Customers paying with cash, etc. should receive a "transfer certificate" at the outflow designated IC, then take a "transit ticket" at the re-inflow IC, and then take the "transition certificate" at the toll booth where they pay the toll for the first time. Please hand over your ``book'' and ``traffic ticket.''

Common to ETC and cash customers

• If the suspension of traffic is released after the outflow designated IC is released, the fare will be adjusted even if it is re-introduced from the IC (including the outflow designated IC) in the closed road section in the forward direction.
• Yamagata PA Smart IC is only available for vehicles with ETC.

Four. work outline

We will inspect tunnel emergency equipment at Yamagata Expressway Line Out-bound Sagae IC ⇒ Gassan IC and Tohoku Chuo Expressway Line In-bound Yamagata Kamiyama IC ⇒ Nanyo Takahata IC.
Since the section in question is a one-lane section on each side, it will be a road closure work. In order to avoid causing as much inconvenience as possible to customers, we will close the road on weekday nights when there is little traffic, and conduct inspections intensively and efficiently. This is a necessary inspection to ensure that you can use Expressway safely and comfortably, so we ask for your understanding and cooperation.

5. How to obtain information about Expressway

(1) Guidance by distribution / posting

• Notice signs, posters and leaflets will be posted at toll booths and rest facilities nearby.

(2) Expressway information available before you leave

• NEXCO東日本お客さまセンター（24時間オペレーターが対応）
  ナビダイヤル：0570-024-024
  または：03-5308-2424
• NEXCO EAST Expressway Information Site "DraTra"
  Real-time information

  https://www.drivetraffic.jp/

  Construction regulation information

  https://www.drivetraffic.jp/construction-regulation
• 日本道路交通情報センター（JARTIC）道路交通情報
  全国共通ダイヤル　050-3369-6666
  （携帯電話短縮ダイヤル　#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。
  東北地方高速情報：050-3369-6761
  山形情報：050-3369-6606
  【アドレス】https://www.jartic.or.jp/
• LINE official account "NEXCO EAST"
  We provide information about Expressway under the jurisdiction of NEXCO EAST.

  

(3) Expressway information available while using Expressway

• Road information board
• Highway radio (AM1620kHz)
  The highway radio section is indicated by signs on the Expressway.
• VICS
  Road information can be obtained from devices equipped with VICS-compatible car navigation systems.

• The official account of X (formerly Twitter) also provides information about Expressway.
  "NEXCO EAST (Tohoku)" (@e_nexco_tohoku)