【C4】首都圏中央連絡自動車道4車線化（久喜白岡JCT～⼤栄JCT）の一部が令和7年3月14日に完成します
~ Ken-O Road (Saitama Prefecture section) begins operation with four lanes on the entire route ~
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- 【C4】首都圏中央連絡自動車道4車線化（久喜白岡JCT～⼤栄JCT）の一部が令和7年3月14日に完成します
February 7, 2025
East Nippon Expressway Co., Ltd.
Saitama Construction Office
Ministry of Land, Infrastructure, Transport and Tourism Kanto Regional Development Bureau
North Metropolitan Highway Office
The Saitama Construction Office East Nippon Expressway Co., Ltd. (Saitama City, Saitama Prefecture) and the Ministry of Land, Infrastructure, Transport and Tourism Kanto Regional Development Bureau North Ken-o Expressway (hereinafter referred to as the "Ken-O Road") to four lanes (from Kuki Shiraoka Junction (hereinafter referred to as "JCT") to Taiei JCT). The section from Satte Interchange (hereinafter referred to as "IC") to Goka IC will begin operation as a four-lane road from March 14, 2025. In addition, the maximum speed on this section will also be increased from 70 km/h to 80 km/h.
With the start of operations, the widening Ken-O Road in Saitama Prefecture will be completed to four lanes.
For the remaining section between Ibaraki and Chiba prefectures, we will continue to proceed with construction with safety as our top priority.
Overview of completed project
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4-lane operation start date:Friday, March 14, 2020, 6:00 p.m.
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4-lane operation start section:Satte IC to Goka IC (length 4.2km)
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Change top speed:The maximum speed in this section will be changed from 70km/h to 80km/h.
Location map of the completed section
Outline of 4-lane operation section
①令和5年3月31日（金）以降
②令和7年2月7日（金）現在
③After 6:00 on Friday, March 14, 2020
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