In the event of an earthquake, it is essential to make roadside buildings along major roads earthquake-resistant in order to create disaster-resilient cities. These roads serve as major arteries for emergency and life-saving activities and the transportation of emergency relief supplies.
Therefore, in order to promote measures related to earthquake resistance, in accordance with the Ordinance to Promote Earthquake Resistance of Buildings Along Emergency Transportation Roads in Tokyo (hereinafter referred to as the “Ordinance”), we will publish the earthquake resistance status of buildings along specified emergency transportation roads (as of the end of June 2025) as follows.
As of the end of June 2020, the seismic resistance status of buildings along designated emergency transportation roads has been published using indicators such as section reach rates that can accurately represent the traffic function of designated emergency transportation roads.

1　Section reachability rate (probability of reaching a certain section from the entrance to the prefectural border)

• Section attainment rate map (as of the end of June 2025) Attachment 1 (PDF: 237KB)
• Section arrival rate change chart (as of the end of December 2024➡As of the end of June 2025) Attachment 2 (PDF: 297KB)

2　Overall achievement rate (average of section achievement rates)

Overall achievement rate = 94.0%

	Overall achievement rate
End of December 2019	91.1％
End of June 2020	91.4％
End of December 2020	91.6％（91.62％）
End of June 2021	91.6％（91.67％）
End of December 2021	92.0％
End of June 2022	92.6％（92.61％）
End of December 2022	92.6％（92.66％）
End of June 2023	92.8％
End of December 2023	93.0％
End of June 2024	93.4％
End of December 2024	93.8％
End of June 2025	94.0％
Increased points from the previous time	0.2

3　Legal basis

Ordinance Article 17, Paragraph 1 (Publication of Earthquake-Resistance Status, etc.)

4　Notes

For more information, please see the Tokyo Metropolitan Earthquake Portal Site.

This project is an initiative to promote the “Tokyo 2050 Strategy.”
Strategy 21: Strengthening urban resilience “Promoting urban development that can withstand and survive”

Contact: Urban Planning Division, Urban Building Department, Urban Development Bureau Phone: 03-5388-3362 Email: S0000168（at）section.metro.tokyo.jp *The email address has been changed to prevent spam. Please replace (at) with @ when using this email address.