Tunnel
Cut-and-Cover Tunnel Projects
Worldwide, often used in urban settings for highways, rail systems, and utilities
Worldwide, often used in urban settings for highways, rail systems, and utilities
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Completed in
Completed in
Varies by project
Varies by project
EMI has worked with several A&E design firms to provide geotechnical design recommendations for various cut-and-cover tunnel projects. The cut-and-cover method is extremely efficient for shallow tunnels where top-down construction can be made. In many cases, the tunnel can be constructed without affecting traffic by placing a temporary deck for vehicles while excavation is underway.
The following are some of the cut-and-cover tunnels as part of larger transportation projects in California:
Cut-and-Cover Tunnel under Doolittle Drive as part of the Oakland Airport Connector, Oakland
Cut-and-Cover Tunnel as part of the Millbrae Extension, Bay Area Rapid Transit, San Francisco
Wildlife Crossing Cut-and-Cover Tunnel under an on-ramp embankment as part of 405-HOV Widening project, Los Angeles
North and South Cut-and-Cover Tunnel Portals of the Devil's Slide Tunnel Project, Pacifica
EMI provided geological and geotechnical investigations, soil and rock testing, and recommendations for design earth pressures and capacities during various stages of construction and earthquake design parameters resulting from seismic racking deformations.


















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Fountain Valley (Head office)
17800 Newhope Street
Suite B
Fountain Valley, CA 92708
(714) 751-3826
Inland Empire
765 North Main Street
Suite 136
Corona, CA 92880
(714) 751-3826
San Francisco Bay Area
3541 Investment Boulevard
Suite 4
Hayward, CA 94545
(510) 562-8833
San Diego
820 Los Vallecitos Boulevard
Suite H
San Marcos, CA 92069
(760) 736-8222
At Earth Mechanics Inc. (EMI), your privacy is our priority. We do not collect or use your personal information for marketing purposes. All communications via SMS are strictly conversational in nature and initiated based on your interactions with EMI.
By providing your phone number, you consent to receive occasional, conversational SMS messages from Earth Mechanics Inc. Message frequency may vary, with an average of 1–2 messages per month. SMS numbers are never sold, shared, or disclosed to third parties without your explicit consent, except as required by law. All personal data, including SMS correspondence, is stored securely and handled in accordance with our privacy standards. We do not transfer your information to external organizations under any circumstances unrelated to legal compliance.
This website may include embedded content (e.g., videos, images, or articles) from third-party websites. Such content behaves as if you visited the third-party site directly. These websites may collect data, use cookies, and track your interaction with the embedded content—especially if you are logged in to their platform.
Some media assets used on this site, including video content, are licensed from Adobe Stock under appropriate licensing terms. These assets are used in compliance with Adobe’s Enhanced License, and no attribution is required.
If you have any questions about this policy or your data privacy, please contact us at info@earthmech.com.
Fountain Valley (Head office)
17800 Newhope Street
Suite B
Fountain Valley, CA 92708
(714) 751-3826
Inland Empire
765 North Main Street
Suite 136
Corona, CA 92880
(714) 751-3826
San Francisco Bay Area
3541 Investment Boulevard
Suite 4
Hayward, CA 94545
(510) 562-8833
San Diego
820 Los Vallecitos Boulevard
Suite H
San Marcos, CA 92069
(760) 736-8222
At Earth Mechanics Inc. (EMI), your privacy is our priority. We do not collect or use your personal information for marketing purposes. All communications via SMS are strictly conversational in nature and initiated based on your interactions with EMI.
By providing your phone number, you consent to receive occasional, conversational SMS messages from Earth Mechanics Inc. Message frequency may vary, with an average of 1–2 messages per month. SMS numbers are never sold, shared, or disclosed to third parties without your explicit consent, except as required by law. All personal data, including SMS correspondence, is stored securely and handled in accordance with our privacy standards. We do not transfer your information to external organizations under any circumstances unrelated to legal compliance.
This website may include embedded content (e.g., videos, images, or articles) from third-party websites. Such content behaves as if you visited the third-party site directly. These websites may collect data, use cookies, and track your interaction with the embedded content—especially if you are logged in to their platform.
Some media assets used on this site, including video content, are licensed from Adobe Stock under appropriate licensing terms. These assets are used in compliance with Adobe’s Enhanced License, and no attribution is required.
If you have any questions about this policy or your data privacy, please contact us at info@earthmech.com.
Fountain Valley (Head office)
17800 Newhope Street
Suite B
Fountain Valley, CA 92708
(714) 751-3826
Inland Empire
765 North Main Street
Suite 136
Corona, CA 92880
(714) 751-3826
San Francisco Bay Area
3541 Investment Boulevard
Suite 4
Hayward, CA 94545
(510) 562-8833
San Diego
820 Los Vallecitos Boulevard
Suite H
San Marcos, CA 92069
(760) 736-8222
At Earth Mechanics Inc. (EMI), your privacy is our priority. We do not collect or use your personal information for marketing purposes. All communications via SMS are strictly conversational in nature and initiated based on your interactions with EMI.
By providing your phone number, you consent to receive occasional, conversational SMS messages from Earth Mechanics Inc. Message frequency may vary, with an average of 1–2 messages per month. SMS numbers are never sold, shared, or disclosed to third parties without your explicit consent, except as required by law. All personal data, including SMS correspondence, is stored securely and handled in accordance with our privacy standards. We do not transfer your information to external organizations under any circumstances unrelated to legal compliance.
This website may include embedded content (e.g., videos, images, or articles) from third-party websites. Such content behaves as if you visited the third-party site directly. These websites may collect data, use cookies, and track your interaction with the embedded content—especially if you are logged in to their platform.
Some media assets used on this site, including video content, are licensed from Adobe Stock under appropriate licensing terms. These assets are used in compliance with Adobe’s Enhanced License, and no attribution is required.
If you have any questions about this policy or your data privacy, please contact us at info@earthmech.com.
Fountain Valley (Head office)
17800 Newhope Street
Suite B
Fountain Valley, CA 92708
(714) 751-3826
Inland Empire
765 North Main Street
Suite 136
Corona, CA 92880
(714) 751-3826
San Francisco Bay Area
3541 Investment Boulevard
Suite 4
Hayward, CA 94545
(510) 562-8833
San Diego
820 Los Vallecitos Boulevard
Suite H
San Marcos, CA 92069
(760) 736-8222
At Earth Mechanics Inc. (EMI), your privacy is our priority. We do not collect or use your personal information for marketing purposes. All communications via SMS are strictly conversational in nature and initiated based on your interactions with EMI.
By providing your phone number, you consent to receive occasional, conversational SMS messages from Earth Mechanics Inc. Message frequency may vary, with an average of 1–2 messages per month. SMS numbers are never sold, shared, or disclosed to third parties without your explicit consent, except as required by law. All personal data, including SMS correspondence, is stored securely and handled in accordance with our privacy standards. We do not transfer your information to external organizations under any circumstances unrelated to legal compliance.
This website may include embedded content (e.g., videos, images, or articles) from third-party websites. Such content behaves as if you visited the third-party site directly. These websites may collect data, use cookies, and track your interaction with the embedded content—especially if you are logged in to their platform.
Some media assets used on this site, including video content, are licensed from Adobe Stock under appropriate licensing terms. These assets are used in compliance with Adobe’s Enhanced License, and no attribution is required.
If you have any questions about this policy or your data privacy, please contact us at info@earthmech.com.