[E18] Joshin-Etsu Expressway Saku IC-Komoro IC Night-time closure and
[E52] Chubu Odan Expressway Saku Komoro JCT Night Lamp Closure Notice

September 28th (Monday) to October 1st (Thursday) From 21:00 pm on each day to 6:00 the next morning
~We will replace the sign board~

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  • [E18] Joshin-Etsu Expressway Saku IC-Komoro IC night traffic closure and [E52] Chubu Odan Expressway Saku Komoro JCT night lamp closure notice

The latest regulatory information is DraTraPlease see.

August 24, 2020
East Nippon Expressway Co., Ltd.
Saku Management Office

NEXCO EAST Saku Management Office (Saku City, Nagano Prefecture), you can use the E18 Joshin-Etsu Expressway (“Joshinetsu Road”) Saku Interchange (“IC”) to Komoro IC, and the E52 Chubu Odan Expressway ( The "Chubu Crossing Road" will be closed at night and closed at night in order to replace the signboard at the lamp at the Sakukomoro Junction (hereinafter "JCT").
We sincerely apologize for the inconvenience, but we ask for your understanding and cooperation so that you may have some time when you go out.

1. Closed/closed points and date and time

(1) Closed place

  1. September 28, 2020 (Mon): Joshinetsu Expressway Upper and Lower Lines Saku IC-Komoro IC
  2. 2020 September 28th (Mon)-October 1st (Thurs): Chubu Crossing Saku Komoro JCT (all ramps)
Image of closed area
  • Attached to each line E18 The indications such as indicate the route number (numbering) of Expressway.

(2) Date and time

  1. Joshinetsu Expressway Upper and Lower Lines Closed between Saku IC and Komoro IC
    Implementation date: 2020 Monday, September 28, 12:00 pm to 6:00 the next morning
    Preliminary day: 2020 September 29th (Tue) and 30th (Wednesday) 21:00 pm to 6:00 am the following day
  2. Chubu Crossing Saku Komoro JCT (all ramps) closed
    Date: 2020 September 28th (Mon)-October 1st (Thursday) 21:00 pm to 6:00 am the following day
    Preliminary day: 2020 Friday, October 2 from 21:00 pm to 6:00 the next morning
Image of date and time
image image of twitter OR code
  • In stormy weather, it will be postponed to the spare day.
  • Construction decision will be announced on Twitter, etc. around 17:00 in the evening.
  • Please note that the following sections managed by the Ministry of Land, Infrastructure, Transport and Tourism are also scheduled to be closed at night due to wire rope installation work and bridge inspections. (Not available on Saturdays, Sundays and stormy weather)
  • Chubu crossing road up and down line Sakunan IC-Yachiho Kogen IC
    Date: 2020 September 14th (Mon) to 25th (Fri)
    Every day from 21:00 pm to 6:00 the next morning
  • Chubu Crossing Upper and Lower Line Komoro Mikage Main Line Toll Gate-Yachiho Kogen IC
    Implementation date: 2020 September 28th (Monday) -October 2nd (Friday)
    Every day from 21:00 pm to 6:00 the next morning
  • Chubu Crossing Upper and Lower Lines Saku Nakasato IC-Yachiho Kogen IC
    Implementation date: Monday 2020 October 5, 2013 to 13th, Tuesday
    Every day from 21:00 pm to 6:00 the next morning
    Preliminary days: 2020 October 14th (Wednesday) to 15th (Thursday)
    Every day from 21:00 pm to 6:00 the next morning

For details, please see the Ministry of Land, Infrastructure, Transport and Tourism website ( https://www.ktr.mlit.go.jp/kisha/nagano_00000361.html ).

2. Construction overview

Joshinetsu Expressway Upper and Lower Lines Between Saku IC and Komoro IC and Chubu Crossing Saku Komoro JCT will carry out the replacement work of the signboards in order to number them.
Since it is not possible to carry out the work under normal lane regulations when performing the work, it is necessary to work with the main road closed and the lamps closed. Therefore, in order to avoid inconvenience to our customers as much as possible, we will carry out construction work intensively and efficiently by closing roads and closing lamps at night on weekdays when traffic is light.
This work is necessary to use Expressway safely and comfortably. We appreciate your understanding and cooperation.

Image image of construction outline

3. Detour

Joshin-etsu Expressway Saku IC-Komoro IC Please refer to the figure below for detours when the road is closed.
If you make a detour as shown below, it will take about 19 minutes (normally about 9 minutes).
Detours will increase the time required, so please take time to go out.

  • When the Chubu Crossing Saku Komoro JCT is closed after Tuesday, September 29th, it is possible to pass between the Joshinetsu Expressway Saku IC and Komoro IC, but please note that the Chubu Crossing is closed to all lines.
Image of detour

Four. Transfer adjustment

For passengers who leave the Expressway once due to suspension of traffic and closing at night, bypass the section of suspension of traffic and closing at night, and re-enter and transfer in the forward direction, adjust the toll according to the section used. Perform joint adjustment.

Transfer designated IC

Closed place Outflow designation IC Re-inflow designated IC
[Joshinetsu Expressway] (In-bound)
Komoro IC ⇒ Saku IC
[Joshinetsu Expressway] (In-bound)
Komoro IC, Tobu Yunomaru IC
[Joshinetsu Expressway] (In-bound)
Saku IC, Sakudaira Smart IC *,
Usui Karuizawa IC, Matsuida Myoyoshi IC
[Joshinetsu Road] (Out-bound line)
Saku IC ⇒ Komoro IC
[Joshinetsu Road] (Out-bound line)
Saku IC, Sakudaira Smart IC *
Usui Karuizawa IC
[Joshinetsu Road] (Out-bound line)
Komoro IC, Tobu Yunomaru IC, Ueda Sugadaira IC
  • Sakudaira Smart IC is limited to all ETC vehicles (12 m or less).

[Joshinetsu Expressway] (In-bound line) Komoro IC ⇒ Saku IC

[Joshinetsu Road] (In-bound) Komoro IC ⇒ Image of Saku IC

[Joshinetsu Expressway] (Out-bound line) Saku IC ⇒ Komoro IC

[Joshinetsu Road] (Out-bound line) Saku IC ⇒ Image image of Komoro IC

How to use transit adjustment

≪ETC customers≫

  • Customers using ETC are requested to run the outflow designated IC wirelessly and the re-inflow designated IC wirelessly. (No transit certificate will be 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 who pay by cash, etc. should receive the "passage certificate" at the outflow designated IC, and then get the "passport" at the re-inflow designated IC, and then make the "transfer" at the toll booth that pays the fare first. Please give us your "certificate" and "passport".

≪Common to customers such as ETC and cash≫

  • 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.

Five. How to obtain traffic information

(1) Guidance by distribution / posting

  • Notice signs, posters and leaflets will be posted at toll booths and rest facilities nearby.
  • A banner will be posted on the overpass on the Expressway.

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

(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
    Road information is provided on the monitor screens installed in SA/PA.
  • VICS
    Road traffic information can be obtained from VICS-compatible car navigation and other on-board devices.
  • Information is also distributed on the official Twitter account.
    "NEXCO EAST (Kanto)" ( @e_nexco_kanto )
    Real-time traffic information
    "NEXCO EAST (Kanto construction regulations)" ( @e_nexco_kanto_k )
    Judgment of implementation of construction regulations
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