As part of the Seibu Shinjuku Line, Kokubunji Line, and Seibu-en Line (near Higashimurayama Station) continuous grade separation project being carried out by the Tokyo Metropolitan Government and Seibu Railway Co., Ltd., construction work will be carried out to switch the Shinjuku Line outbound lanes to an elevated track as detailed below. This is expected to shorten the blocking time at four crossings in this section, including Fuchu-kaido, and ease traffic congestion at these crossings.
Following the recent elevating of the Shinjuku Line’s outbound lines, construction will also proceed with the early elevation of the Kokubunji Line, Seibuen Line, and Shinjuku Line’s inbound lines. Going forward, Tokyo will continue to actively promote the continuous grade separation project, promoting the formation of a road network by simultaneously removing many level crossings, as well as alleviating traffic congestion caused by level crossings and integrating towns divided by railways.

1　Scheduled changeover date, etc.

（1）Scheduled date and time of switching work

After the last train on Saturday, June 28, 2025 – before the first train on Sunday, June 29, 2025
*If the switchover work cannot be carried out on the day due to unavoidable circumstances such as bad weather, it will be carried out after the last train on July 5th (Saturday) to before the first train on July 6th (Sunday).

（2）Switching section

Seibu Shinjuku Line (near Higashimurayama Station) Down line (approximately 2.3 km)

（3）Train service suspension

none

2　Overview of the project

（1）Project name

Seibu Shinjuku Line, Kokubunji Line and Seibuen Line (near Higashimurayama Station) Continuous Grade Separation Project

（2）Business operators

Tokyo

（3）Project extension

Approximately 4.5 km (Shinjuku Line: Approximately 2.3 km, Kokubunji Line: Approximately 0.8 km, Seibuen Line: Approximately 1.4 km)
*Attachment Seibu Shinjuku Line, Kokubunji Line and Seibuen Line (near Higashimurayama Station) Continuous Grade Separation Project Outline (PDF: 747KB)

（4）Project Costs

Approximately 93.5 billion yen

（5）Project period

• Urban Rapid Transit Project (Railway) FY2013 to FY2018
• Railway Access Road Project (Side Road) FY2013 to FY2020

3　Others

Prior to the elevated conversion of the Shinjuku Line’s outbound tracks, we will be holding a facility tour for local residents and others. For details, please see the Seibu Railway Co., Ltd. website.

This project is an initiative to promote the “Tokyo 2050 Strategy.”
Strategy 18: Infrastructure/Transportation “Creating a smooth road network that is easy for everyone to use”

Contact Railway-related Business Division, Road Construction Department, Construction Bureau Phone: 03-5320-5334 Email: S0000413（at）section.metro.tokyo.jp   *The email address has been changed to prevent spam. Please replace (at) with @ when using this email address.