Welcome to the State of California
Governor Brown Brian P. Kelly Malcolm Dougherty Carrie Bowen
710 Tunnel Study
Caltrans District 7 0n Twitter
Caltrans District 7 Blog
Caltrans District 7 On Friendfeed
Caltrans District 7 on FeedBurner
Caltrans District 7 RSS Feed (Atom)
710 Tunnel Study

710 Tunnel Technical Study Information


Please use the navigation buttons on the left to find more information about the study.
If you require more information, please contact us, or visit us at: 

Caltrans Media Affairs and Public Relations - (213)897-3656

New! Meeting Minutes of the Final Joint Committee Meeting of the SR-710 Tunnel Technical Study Steering Committee and Technical Advisory Committee
Tuesday, March 30, 2010
South Pasadena Public Library

Final Geotechnical Summary Report SR-710 Tunnel Technical Study

Upcoming 2010 Community Meetings

The SR-710 Tunnel Technical Study Team has recently completed the DRAFT Geotechnical Summary Report. Additional community meetings are scheduled to share the outcome of field exploration work conducted as part of the Study. A short presentation on information contained in the DRAFT Report will summarize the geology, faulting, seismicity, material properties, hazardous materials and groundwater conditions within the Study’s five zones.
2010 Community Meetings Flyer (English)
2010 Community Meetings Flyer (Chinese)
2010 Community Meetings Flyer (Spanish)
2010 Community Meetings Flyer (Armenian)

Draft Geotechnical Summary Report Ready for Review

The State Route 710 Tunnel Technical Study has completed its mission to gather data on geological conditions within five geographic zones.
Data collection and field exploration work, as part of the Study’s Exploration Program, has been reviewed and evaluated. Descriptions of geology, faulting, seismicity, material properties, hazardous materials, groundwater conditions, and tunneling considerations are provided in depth in the SR-710 Tunnel Study DRAFT Geotechnical Summary Report.
The Executive Summary of the DRAFT Geotechnical Summary Report contains an abbreviated review of the data, which in its entirety contains several volumes.
The Study information provides Caltrans and Metro a preliminary basis for evaluating the feasibility of tunneling within each zone. The two partnering agencies will determine the next steps. In the interim, the DRAFT Geotechnical Summary Report provides an efficient base and sufficient information to compare zones from a geotechnical perspective.



View Volume 1 (Main Report).
View Executive Summary  
View Executive Summary (Spanish)
View Executive Summary (Chinese)

To view Volumes 2 through 5 (Appendices A-F), please visit the SR-710 Tunnel Technical Study Office located at:
3412 North Eastern Ave. Los Angeles, CA 90032 Monday through Friday between 8 AM and 5 PM (excluding holidays). 
The Draft Geotechnical Summary Report will also be available on DVD format for the public to view at the following public libraries within the Study area: Public Libraries List


加州道路的710 公路隧道工程研究已完成其在五個地理區域中收集地質情況資料的使命。



 參閱 第1卷 (主要報告)
 參閱 特別行政概要 
參閱 特別行政概要 (西班牙文)
參閱 特別行政概要 (中文)    
要參閱 第 2 至 第5 卷 (附錄 A-F), 請到SR-710 隧道工程研究 辦事處 地址:
3412 North Eastern Ave. Los Angeles, CA 90032
星期一至五  上午 8 時至下午 5 時 (除假期外).
土地工程摘要報告草稿也有用DVD模式公開在工程研究區域內的公立圖書館給公眾閱覽: 公立圖書館名單

First Issue of The Explorer Newsletter - Fall 2009





The Explorer is the newsletter of the SR-710 Tunnel Technical Study that provides information to stakeholders and community members about the Study's progress and important updates.
This issue includes information regarding:

  • Study progress and additional proposed Study components
  • SR-710 extension and what it can mean for congestion relief and improved air quality
  • Congressman Schiff's statement on route neutrality
  • Roles and membership of  the Steering and Technical Advisory Committees
  • Input received from stakeholders in the first round of community meetings
  • Ways to stay informed and involved as the Study progresses 


Page Last Modified 12/31/69 04:00
Back Button | Back To Page Top Link