{"id":18090,"date":"2024-10-21T06:05:17","date_gmt":"2024-10-21T06:05:17","guid":{"rendered":"https:\/\/tunnelingworld.com\/?p=18090"},"modified":"2024-10-21T06:05:17","modified_gmt":"2024-10-21T06:05:17","slug":"united-states-tbm-mary-restarted-for-hrbt-project","status":"publish","type":"post","link":"https:\/\/tunnelingworld.com\/?p=18090","title":{"rendered":"United States &#8211; TBM Mary restarted for HRBT project"},"content":{"rendered":"<p><strong>Mary, the tunnel-boring machine, is on the move again!<\/strong><\/p>\n<p>HRBT&#8217;s bored tunnel is only the third of its kind in the United States.<\/p>\n<p>This part of the project started at HRBT&#8217;s North Island 6 months ago.<\/p>\n<p>The project, once complete, will have two new twin tunnels spanning 1.5 miles.<\/p>\n<p>The TBM &#8211; six months to the day since it broke through the headwall at HRBT North Island &#8211; is on the move again. Mary began boring a twin eastbound towards Norfolk shortly after 17th October noon.<\/p>\n<p>In early September, tunnel crews successfully lifted the fourth and final gantry out of the newly bored tunnel and onto North Island. The TBM Mary restarted boring almost 20 m (65 feet) below the road surface with only the first three gantries in place, making space for the last gantry as the machine advances.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mary, the tunnel-boring machine, is on the move again! HRBT&#8217;s bored tunnel is only the third of its kind in the United States. This part of the project started at HRBT&#8217;s North Island 6 months ago. The project, once complete, will have two new twin tunnels spanning 1.5 miles. The TBM &#8211; six months to the day since it broke through the headwall at HRBT North Island &#8211; is on the move again. Mary began boring a twin eastbound towards Norfolk shortly after 17th October noon. In early September, tunnel crews successfully lifted the fourth and final gantry out of [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":18091,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4001],"tags":[4334,441,228,1999],"class_list":["post-18090","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-contract-projects","tag-hrbt-project","tag-tbm-mary","tag-twin-tunnel","tag-united-states","post--single"],"_links":{"self":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/18090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18090"}],"version-history":[{"count":1,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/18090\/revisions"}],"predecessor-version":[{"id":18092,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/18090\/revisions\/18092"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/media\/18091"}],"wp:attachment":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}