THE CONCRETE BRIDGE MAGAZINE

SPRING 2014

ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

Issue link: http://www.aspiremagazinebyengineers.com/i/295658

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The Montlake Triangle Pedestrian (MTP) Bridge is a highly-curved, 427-ft-long, cast-in-place (CIP), post-tensioned concrete pedestrian bridge spanning over Montlake Boulevard between the Sound Transit light-rail station and the University of Washington (UW) campus in Seattle, Wash. A number of challenges to bridge design and c o n s t r u c t i o n w e re p re s e n t e d b y the unique geometry, curved post- tensioning, dissimilar foundations, and the need to interface with several structures and utilities, both new and existing. It is anticipated that this daring bridge will become a landmark for both the UW and the city of Seattle. Project Overview The MTP Bridge was designed and constructed as part of Sound Transit's University Link project to extend light- rail from downtown Seattle to the UW campus. The new station is located on the east side of Montlake Boulevard directly across from the UW Triangle a re a . T h i s Tr i a n g l e a re a i s b e i n g revitalized by the UW, enhancing the view of Mount Rainer from campus with new landscaping and improving pedestrian and bicycle access. The Headhouse is a building structure that forms the above-ground portion of the profile MONTLAKE TRIANGLE PEDESTRIAN BRIDGE / SEATTLE, WASHINGTON BRIDGE DESIGN ENGINEER: AECOM, Seattle, Wash. ARCHITECT: LMN, Seattle, Wash. PRIME CONTRACTOR: Hoffmann Construction, Seattle, Wash. POST-TENSIONING CONTRACTOR: Schwager Davis Inc., San Jose, Calif. Montlake Triangle Project. Rendering: LMN. by Claudio Osses and Richard Patterson, Buckland & Taylor, and Orin Brown and Huanzi Wang, AECOM Curved, post-tensioned structure links Seattle campus to downtown MONTLAKE TRIANGLE PEDESTRIAN BRIDGE 28 | ASPIRE , Spring 2014 P R O J E C T AspireBook_Spr14.indb 28 3/21/14 2:21 PM

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