On Oct. 13, SFPUC (The San Francisco Public Utilities Commission) awarded HH-1000R (the Mountain Tunnel Improvements project) to Michels Tunneling for $138,965,566. NTP is expected for Jan. 4, 2021.<\/p>\n
Due to the implementation and development of new COVID-19 related construction safety laws, the bid award was delayed through the summer months of 2020.<\/p>\n
The project includes 11 miles of rehabilitation of the 10-ft diameter, concrete-lined, horseshoe tunnel, which was finished in 1925. Work comprises contact grouting, concrete lining repairs, large control valve installations, downstream valve control structure, adit\/portal improvements, new tunnel adit, water cut-off grouting, tunnel siphon extension, access roadway improvements, temporary staging area excavations and grading, water discharge treatment, the construction of a new 1,075-ft Adit Tunnel at Priest Reservoir to modify maintenance access, and environmental mitigations.<\/p>\n
Mainly, the work will be 1,000 ft underground surface and is going to be accessed through the downstream Priest Portal, and Adits 5\/6 and 8\/9 at intermediate locations along the alignment. Moreover, the access will be available 7 miles upstream through the 13.5-ft diameter unlined section of the tunnel from Early Intake. McMillen Jacobs Associates (MJA) is the project designer with AECOM as environmental consultant.<\/p>\n","protected":false},"excerpt":{"rendered":"
On Oct. 13, SFPUC (The San Francisco Public Utilities Commission) awarded HH-1000R (the Mountain Tunnel Improvements project) to Michels Tunneling for $138,965,566. NTP is expected for Jan. 4, 2021. Due to the implementation and development of new COVID-19 related construction safety laws, the bid award was delayed through the summer months of 2020. The project includes 11 miles of rehabilitation of the 10-ft diameter, concrete-lined, horseshoe tunnel, which was finished in 1925. Work comprises contact grouting, concrete lining repairs, large control valve installations, downstream valve control structure, adit\/portal improvements, new tunnel adit, water cut-off grouting, tunnel siphon extension, access roadway […]<\/p>\n","protected":false},"author":3,"featured_media":2466,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41],"tags":[],"class_list":["post-2465","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","post--single"],"_links":{"self":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/2465","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\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2465"}],"version-history":[{"count":0,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/2465\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/media\/2466"}],"wp:attachment":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}