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

July 3rd (Monday) to 7th (Friday), 10th (Monday) to 13th (Thursday) From 20:00 to 6:00 the next morning each day
～We will repair the damaged pavement～

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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: 449KB]

June 19, 5th year of Reiwa
East Nippon Expressway Co., Ltd.
Tokorozawa Management Office

NEXCO EAST Tokorozawa Management Office (Tokorozawa City, Saitama Prefecture) will close the ramp for pavement repair work at the Iruma Interchange (hereinafter "IC") on the C4 Ken-o Expressway (hereinafter "Ken-O Road"). carry out.
We apologize for the inconvenience, but we ask for your understanding and cooperation so that you have plenty of time when you go out.

1. 1. Closing location and date and time

  1. Closed place:
    Ken-O Ken-O Road Iruma IC
    ①Exit ramp from the inner circle (Tsurugashima JCT direction)
    ②Entrance ramp to the outer loop (Tsurugashima JCT direction)
    2. Image of closed area
    • Attached to each line C4 The indications such as indicate the route number (numbering) of Expressway.
  2. Date and time
    • (1) Ramp closing Implementation date
      • July 3 (Mon) to 5 (Wed), 2023
    • (2) Ramp closing Implementation date
      • July 6th (Thursday) and 7th (Friday), 2023
      10th (Mon) to 13th (Thu)
      Every day from 20:00 to 6:00 the next morning
    • Preparation day
      • July 18th (Tue) to 21st (Fri), 2023
      24th (Mon) to 28th (Fri)
      31st (Mon), August 1st (Tue)
      Every day from 20:00 to 6:00 the next morning
    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 spare day.
  • We will inform you of the implementation decision on Twitter etc. around 17:00 on the day.
  • If the ramp construction is postponed due to stormy weather, construction will be carried out on a spare day after July 18 (Tue).
    The order of construction on the spare day will be ①⇒②.
  • We will inform you about the closure of the preliminary day on DraTra and Twitter.

2. Detour

Please refer to the diagram on the right for detours.

  • The detour route from Sayama Hidaka IC to near Iruma IC is as indicated by the orange arrow. Sayama Hidaka IC Exit for Kawagoe/Sayama ⇒ Sayama Hidaka IC (East) turn right ⇒ Route 407 ⇒ Route 299 ⇒ Kawaramachi right turn ⇒ Route 16 Proceed in the direction of Hachioji and proceed toward your destination.
  • The detour from Iruma IC to Sayama Hidaka IC entrance is as indicated by the blue arrow. Iruma IC ⇒ Route 16 towards Kawagoe ⇒ Turn left at Kawaramachi ⇒ Route 299 ⇒ Route 407 ⇒ Sayama Hidaka IC (East) turn left ⇒ Sayama Hidaka IC Proceed to the entrance and proceed toward your destination.

If you detour as shown in the diagram on the right, it will take about 20 minutes (usually about 7 minutes).

Image of detour

3. Construction overview

Due to damage to the road surface at Ken-O Road Iruma IC, we will carry out pavement repair work. The section where this work will be carried out is a single lane, and since construction cannot be carried out under normal lane restrictions, it is necessary to work with the ramp closed.
Therefore, in order to minimize inconvenience to customers, we will close the ramps at night when there is little traffic, and carry out construction work intensively and efficiently.
We ask for your understanding and cooperation as this work is necessary for safe and comfortable use of Expressway.

Photo of pavement damage situation
Image of caption of pavement damage situation
Photo of night pavement repair work
Night pavement repair work Caption image of work status

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 using the Expressway

  • 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 by the monitor screens installed in SA / PA.
  • VICS
    Road traffic information can be obtained with VICS-compatible onboard equipment such as car navigation.
  • Information is also distributed on the official accounts of Twitter and LINE.
    [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
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