ID 491127
Archived
King County
Owner Reference: 2018-018
Bid Date: 06/12/2019 at 02:00pm
Pre-Bid: 03/21/2019
OR 3/26/2019 @ 10am. 5300 24th Ave NW, Seattle, WA 98107
Estimate: $219M
Install a 13,939 foot-long, 18-foot 10-inch internal diameter, segmentally lined tunnel constructed with a pressurized face Tunnel Boring Machine (TBM); construct 5 shafts to include civil, architectural, structural, mechanical, HVAC, electrical, and instrumentation work; install a 646 foot-long, 94-inch internal diameter, conveyance tunnel under the Lake Washington Ship Canal using a Microtunnel Boring Machine (MTBM); install surface conveyance piping and structures, and site restoration at all shaft locations.
City of Seattle, Public Utilities
Ryan Brady
(206) 684-3617
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Published 04/29/2019 on Construction Bid Source
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