{"id":18449,"date":"2026-11-02T20:01:29","date_gmt":"2026-11-03T04:01:29","guid":{"rendered":"https:\/\/www.robbinstbm.com\/?p=18449"},"modified":"2026-11-02T20:06:20","modified_gmt":"2026-11-03T04:06:20","slug":"ellicott-city-nat-2026","status":"publish","type":"post","link":"https:\/\/www.robbinstbm.com\/es\/ellicott-city-nat-2026\/","title":{"rendered":"Rebuild of a Veteran TBM for Maryland’s Ellicott City North Tunnel"},"content":{"rendered":"

A veteran Main Beam Machine is boring Maryland\u2019s 0.9 mi (1.5 km) long Ellicott City North Tunnel, a major flood mitigation project designed to protect the historic town from future flash floods. Through a long-standing partnership with contractor Kiewit on TBM rebuilds, the 18.4 ft (5.6 m) diameter Main Beam TBM, originally built in 1991 and since used on multiple tunnels around the world, was refurbished in Robbins\u2019 Solon, Ohio, USA facility. In this paper, the authors detail the rebuild process used and the use of the TBM on the historic project.<\/p>\n","protected":false},"excerpt":{"rendered":"

A veteran Main Beam Machine is boring Maryland\u2019s 0.9 mi (1.5 km) long Ellicott City North Tunnel, a major flood mitigation project designed to protect the historic town from future flash floods. In this paper, the authors detail the rebuild process used and the use of the TBM on the historic project.<\/p>\n","protected":false},"author":2,"featured_media":18393,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[7],"tags":[],"class_list":["post-18449","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-white-papers"],"acf":[],"yoast_head":"\nRebuild of a Veteran TBM for Maryland's Ellicott City North Tunnel - Robbins<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.robbinstbm.com\/ellicott-city-nat-2026\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rebuild of a Veteran TBM for Maryland's Ellicott City North Tunnel - Robbins\" \/>\n<meta property=\"og:description\" content=\"A veteran Main Beam Machine is boring Maryland\u2019s 0.9 mi (1.5 km) long Ellicott City North Tunnel, a major flood mitigation project designed to protect the historic town from future flash floods. In this paper, the authors detail the rebuild process used and the use of the TBM on the historic project.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.robbinstbm.com\/ellicott-city-nat-2026\/\" \/>\n<meta property=\"og:site_name\" content=\"Robbins\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-03T04:01:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-03T04:06:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.robbinstbm.com\/wp-content\/uploads\/2026\/03\/Image-1-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1902\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Robbins\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Robbins_Co\" \/>\n<meta name=\"twitter:site\" content=\"@Robbins_Co\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Robbins\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.robbinstbm.com\\\/ellicott-city-nat-2026\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.robbinstbm.com\\\/ellicott-city-nat-2026\\\/\"},\"author\":{\"name\":\"Robbins\",\"@id\":\"https:\\\/\\\/www.robbinstbm.com\\\/#\\\/schema\\\/person\\\/5fb6775f0b2b170edca2e3bdc16be280\"},\"headline\":\"Rebuild of a Veteran TBM for Maryland’s Ellicott City North Tunnel\",\"datePublished\":\"2026-11-03T04:01:29+00:00\",\"dateModified\":\"2026-11-03T04:06:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.robbinstbm.com\\\/ellicott-city-nat-2026\\\/\"},\"wordCount\":100,\"publisher\":{\"@id\":\"https:\\\/\\\/www.robbinstbm.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.robbinstbm.com\\\/ellicott-city-nat-2026\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.robbinstbm.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/Image-1-scaled.jpg\",\"articleSection\":[\"White Papers\"],\"inLanguage\":\"es\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.robbinstbm.com\\\/ellicott-city-nat-2026\\\/\",\"url\":\"https:\\\/\\\/www.robbinstbm.com\\\/ellicott-city-nat-2026\\\/\",\"name\":\"Rebuild of a Veteran TBM for Maryland's Ellicott City North Tunnel - 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