Construction Today - February 2011 - (Page 74)
The Alaskan Way Viaduct is being strengthened to protect it from earthquakes.
Civil | ALASKAN WAY VIADUCT
Strengthening the Way
THE ALASKAN WAY VIADUCT IN SEATTLE WILL BE REPLACED OVER THE NEXT FIVE YEARS. BY JIM HARRIS
how these structures behave in earthquakes and lacks a lot of the design he first phase of a major infrastructure project in the heart of details that would be required for a structure of this size.” Seattle is underway. General Contractors Skanska USA started The 2.2-mile-long viaduct was completed in 1959. The adjacent seawork in July 2010 on a portion of the Alaskan Way viaduct wall – which holds soil in place along Seattle’s waterfront – was comreplacement program, a $3.1 billion project running along State pleted in the 1930s. Route 99 through downtown Seattle. “As we replace the aging viaduct, we are addressing a major pubThe Washington State Department of Transportation (WSDOT) has lic safety concern, creating thousands of family-wage construction been preparing for the project for more than 10 years, with planning jobs and ensuring that a major transportation intensifying following the February 2001 corridor remains open for business,” Nisqually earthquake. The 6.8 magnitude Washington Governor Chris Gregoire said of temblor damaged both the viaduct and www.alaskanwayviaduct.org the project in a statement. the seawall. Emergency repairs were • Total state program cost: $3.1 billion made to both structures after the event while WSDOT officials designed a permaProject Phases • Location: Seattle nent solution. The first major phase of the project will replace the • Employees on site at peak: 5,000 “When the Nisqually earthquake hap1-mile-long southern end of the viaduct between expected pened, we realized we had a significant South Holgate and South King Streets. • Project scope: Highway and tunnel construction safety issue; even before that, we knew the Skanska USA crews are building an at-grade viaduct was near the end of its usable life,” six-lane roadway next to the existing viaduct as says Ron Paananen, administrator for the well as a bridge over South Atlantic Street. Work replacement program. “The viaduct was also includes building off-ramp detours near –Ron Paananen, administrator, WSDOT built at a time before we knew a lot about area stadiums, a railroad crossing, and new bicy-
Alaskan Way Viaduct
“Once completed, this area will look completely different.”
CONSTRUCTION-TODAY.COM FEBRUARY 2011
Table of Contents for the Digital Edition of Construction Today - February 2011
Construction Today - February 2011
Out of the Blues
Wall Works USA Inc.
Pacific Pile & Marine
Dufferin Construction – Highways 403 and 401 Projects
Natt McDougall Co.
Abhe & Svoboda Inc.
McKinney Drilling Co.
ODOT/Miller Cable Co. – Northeast Ohio ITS Project
Barnard Construction – Snoqualmie Falls Hydroelectric Redevelopment Project
C.A. Barrs Contractor Inc.
Charles Blalock and Sons Inc.
Parsons Brinkerhoff, Hatch Mott MacDonald, Skanska USA, Dragados USA and Tutor Perini – Alaskan Way Viaduct Replacement
William Charles Construction – I-39 Repaving
CB Richard Ellis Canada
The Cadillac Fairview Corp. Ltd./PCL Constructors Canada Inc.
Fargo Pacific Inc.
Critchfield Pacific Inc.
Harold O’Shea Builders
Culpepper Construction Co. Inc.
Golden State Framers
Hudspeth & Associates Inc.
IMC Construction Inc.
Jones Lang LaSalle – Empire State Building Renovation and Retrofit
Econo-Malls Management Corp.
Turner Construction San Diego – New Central Library
Trotter & Morton – University of Calgary
Collavino Construction Co. Inc. – One World Trade Center
Danis Building Construction Company – The Indu and Raj Soin Medical Center
F.J. Sciame Construction Co. – Abraham Joshua Heschel School
Eckman Construction – Pinkerton Academy Freshman Building
The Hagerman Group – Parkview Whitley Hospital
Whaler Industrial Contracting Inc.
Construction Today - February 2011