Read Engineering News Record editor Aileen Cho's report on Metro D Line's Section D and the unique obstacles the contracting team faced;
https://www.enr.com/articles/58453-tunneling-wraps-up-on-la-metros-95b-d-line-extension?v=preview
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.enr.com/articles/58453-tunneling-wraps-up-on-la-metros-95b-d-line-extension?v=preview
Tunneling Wraps Up on LA Metro's $9.5B D Line Extension
www.enr.comLA Metro's D Line Extension reached a key milestone as the tunnels for all nine miles of the project have been successfully completed.