Locale : North America (English)
Create document Page
Review document
Page Added

July 26, 2018

Downtown Bellevue Tunnel achieves breakthrough

Left to right: Hong Yang, Roy West, Mike Murray and Sushir Patel.

Sound Transit's East Link project, a $3.7 billion, 14-mile (22-kilometer) light rail transit (LRT) extension, will connect downtown Seattle with the cities of Bellevue and Redmond. East Link is scheduled to open for revenue operations in 2023.

The most technically challenging aspect of the project is the Downtown Bellevue Tunnel, 2,500 feet (0.7 kilometers) long, to be constructed using a combination of cut and cover and the Sequential Excavation Method (SEM). The tunnel passes through glacially overconsolidated soil deposits at shallow depth and in close proximity to the basements of high-rise buildings.

The tunnel breakthrough was completed on July 20, some five months ahead of schedule. The breakthrough was a very exciting milestone for the project and a considerable achievement for all those associated with the design and delivery of this section of the East Link project.

icon-arrow-down-sml icon-arrow-left-lrg icon-arrow-left-sml icon-arrow-right-lrg icon-arrow-right-sml icon-arrow-up-sml icon-champions icon-close icon-download icon-education icon-email icon-grid-view icon-language icon-link-to icon-list-view icon-location icon-login-register icon-minus icon-more icon-phone icon-plus icon-recently-viewed icon-search icon hash key-facts-corner-sash quote-underline social-icon-facebook social-icon-googleplus social-icon-linkedin social-icon-twitter social-share-icon-facebook social-share-icon-facebook social-share-icon-googleplus social-share-icon-googleplus social-share-icon-instagram social-share-icon-instagram social-share-icon-linkedin social-share-icon-linkedin social-share-icon-twitter social-share-icon-twitter social-share-icon-youtube social-share-icon-youtube sina-weibo MM-Shape01-Quote-Views MM-Shape03-Quote-Locations MM-Shape05-Quote-Projects MM-Shape12-Quote-Sectors MM-Shape13-Quote-Expertise MM-Shape14-Quote-About-Us MM-Shape14-Quote-Careers checkmark icon-expand-view icon-apply-now menu sphere icon-cookies icon-legal icon-registered-companies target rotate-screen video-replay-flat video-replay audio-mute audio-play