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[C4] Notice of closure of the Iruma IC night ramp on the Ken-O Ken-o Expressway

April 4th (Sun) -14th (Wed) Every day from 20:00 to 6:00 the next morning
-We will replace the bridge expansion and contraction device-

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  • [C4] Notice of closure of the Iruma IC night ramp on the Ken-O Ken-o Expressway
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PDF version [PDF: 3.5MB]

March 19, 3rd year of Reiwa
East Nippon Expressway Co., Ltd.
Tokorozawa Management Office

NEXCO EAST Tokorozawa Management Office (Tokorozawa City, Saitama Prefecture), the bridge expansion and contraction device will be replaced at the C4 Ken-o Expressway (hereinafter "Ken-O Road We will close the lamp for construction work.
We apologize for the inconvenience caused to our customers, but we ask for your understanding and cooperation so that you will have time to spare when you go out.

1. 1. Ramp closure location and date and time

number Road name Closed location [Iruma IC] period Attachment
【1】 C4 Ken-O Road Exit ramp to Kawagoe April 4th (Sun), 5th (Mon)
From 20:00 to 6:00 the next morning each day		 Document 1 [PDF: 901KB]
【2】 Exit ramp to Hachioji April 6th (Tuesday), 7th (Wednesday)
From 20:00 to 6:00 the next morning each day		 Document 2 [PDF: 1.0MB]
【3】 Entrance ramp from Kawagoe Thursday, April 8
11th (Sun), 12th (Mon)
From 20:00 to 6:00 the next morning each day		 Document 3 [PDF: 907KB]
【4】 Entrance lamp from the direction of Hachioji April 13th (Tuesday), 14th (Wednesday)
From 20:00 to 6:00 the next morning each day		 Document 4 [PDF: 952KB]
  • Attached to each line C4 The indications such as indicate the route number (numbering) of Expressway.
Image of date and time
Two-dimensional code image link to NEXCO EAST (Kanto construction regulations) twitter (external link)
  • In stormy weather, it will be postponed to the next construction day, and each construction scheduled after that will also be postponed by one day.
  • We will inform you of the implementation decision on Twitter etc. around 17:00 on the day.

2. Detour

Please refer to the attached document [PDF: 3.1MB] for the detour.
The detour will take longer, so please leave plenty of time.

3. Construction overview

Ken-O Road At the Iruma IC, the expansion and contraction device installed at the joint between bridges has been damaged due to aging, so we replaced it with a more durable steel expansion and contraction device. I will. The section where this work is to be carried out is a one-lane ramp, and since it is not possible to carry out the work under normal lane regulations, it is necessary to close the ramp and carry out the work.
Therefore, in order to avoid inconvenience to customers as much as possible, we will close the lamps on weekday nights when traffic is light and carry out construction intensively and efficiently. This work is necessary to use Expressway safely and comfortably, so we ask for your understanding and cooperation.

Image of the situation of the telescopic device
Telescopic device replacement work Image of work situation

Four. 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.
  • On the day of the ramp closing, a detour sign will be installed at the main intersection of the detour.

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

(3) Road traffic information available while driving

  • Road information board
  • Highway radio (AM1620kHz)
    The highway radio section is indicated by signs on the Expressway.
  • Highway Information Terminal
    We will inform you of road information in an easy-to-understand manner from the monitor screens installed in SA / PA.
  • VICS
    You can get road traffic information with a VICS-compatible car navigation system.
  • 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 regarding implementation of construction regulations
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