{"id":3884,"date":"2026-04-22T11:59:47","date_gmt":"2026-04-22T09:59:47","guid":{"rendered":"https:\/\/www.igeas.com\/?post_type=realizzazioni&p=3884"},"modified":"2026-04-22T12:03:12","modified_gmt":"2026-04-22T10:03:12","slug":"modernisation-works-of-ss-42-del-tonale-e-della-mendola-east-bypass-of-edolo-bs-lot-ii","status":"publish","type":"realizzazioni","link":"https:\/\/www.igeas.com\/en\/projects\/modernisation-works-of-ss-42-del-tonale-e-della-mendola-east-bypass-of-edolo-bs-lot-ii\/","title":{"rendered":"Modernisation works of SS 42 \u201cdel Tonale e della Mendola\u201d \u2013 East bypass of Edolo (BS) \u2013 Lot II."},"content":{"rendered":"

Project objective<\/strong><\/p>\n

The intervention is among the infrastructure works connected with and contextual to the so\u2011called Milan\u2013Cortina 2026 Olympics Decree, and consists of a variant of SS 42 which currently crosses the built\u2011up area of Edolo and connects the Alta Valle Camonica area to Bergamo towards SW and to Bolzano towards NE, designed adopting a \u201cC1\u201d road cross\u2011section.<\/p>\n

Main works of competence<\/strong><\/p>\n

South open\u2011cut section<\/em>
\nStarting from the South roundabout (R = 23.0 m), the alignment develops for a long stretch first in open cut (150 m) and then in an artificial tunnel (340 m), largely alongside the ENEL power plant, up to the connection section with the natural tunnel.<\/p>\n

Natural tunnel<\/em>
\nExcavated using \u201ctraditional\u201d methodology, featuring a monocentric internal profile with circular cylindrical vault (internal radius 6.45 m). Total length 1,443.79 m with maximum longitudinal gradient 6.05%.
\nSingle tube with two\u2011way traffic; as its length exceeds 1,000 m, the tunnel is equipped with a safety adit located below the carriageway, with escape routes (accesses to the adit) every 300 m at the lay\u2011bys and two final exits near both the South and North portals.<\/p>\n

North open\u2011cut section<\/em>
\nThe artificial tunnel section has a limited extension (23 m), with portal shaped as an \u201cinverted flute\u2011beak\u201d, and leads to the new bridge and the North roundabout (R = 17.0 m).<\/p>\n

Oglio River bridge<\/em>
\nSingle span, straight axis, simply supported, with design span (distance between supports) 60.00 m. The deck consists of a steel structure made of a grillage of longitudinal and transverse beams with a reinforced\u2011concrete slab cast on top.
\nThe structural type is a \u201ctied arch\u201d bridge: the deck is supported by hangers (\u201cpendini\u201d) suspended from two upper circular steel arches.<\/p>\n","protected":false},"featured_media":3768,"parent":0,"template":"","settore":[26,30,31],"class_list":["post-3884","realizzazioni","type-realizzazioni","status-publish","has-post-thumbnail","hentry","settore-road-infrastructures","settore-underground-works","settore-bridges-and-viaducts"],"acf":[],"yoast_head":"\nModernisation works of SS 42 \u201cdel Tonale e della Mendola\u201d \u2013 East bypass of Edolo (BS) \u2013 Lot II. - IGEAS Engineering S.r.l.<\/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.igeas.com\/en\/projects\/modernisation-works-of-ss-42-del-tonale-e-della-mendola-east-bypass-of-edolo-bs-lot-ii\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Modernisation works of SS 42 \u201cdel Tonale e della Mendola\u201d \u2013 East bypass of Edolo (BS) \u2013 Lot II. - IGEAS Engineering S.r.l.\" \/>\n<meta property=\"og:description\" content=\"Project objective The intervention is among the infrastructure works connected with and contextual to the so\u2011called Milan\u2013Cortina 2026 Olympics Decree, and consists of a variant of SS 42 which currently crosses the built\u2011up area of Edolo and connects the Alta Valle Camonica area to Bergamo towards SW and to Bolzano towards NE, designed adopting a […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.igeas.com\/en\/projects\/modernisation-works-of-ss-42-del-tonale-e-della-mendola-east-bypass-of-edolo-bs-lot-ii\/\" \/>\n<meta property=\"og:site_name\" content=\"IGEAS Engineering S.r.l.\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-22T10:03:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.igeas.com\/wp-content\/uploads\/2026\/03\/356_ANAS_SS42_Edolo_BS-1_00_2560x1390-1024x556.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"556\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.igeas.com\\\/en\\\/projects\\\/modernisation-works-of-ss-42-del-tonale-e-della-mendola-east-bypass-of-edolo-bs-lot-ii\\\/\",\"url\":\"https:\\\/\\\/www.igeas.com\\\/en\\\/projects\\\/modernisation-works-of-ss-42-del-tonale-e-della-mendola-east-bypass-of-edolo-bs-lot-ii\\\/\",\"name\":\"Modernisation works of SS 42 \u201cdel Tonale e della Mendola\u201d \u2013 East bypass of Edolo (BS) \u2013 Lot II. - 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