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Title: INTERSTATE 90: FOR THE 1990S AND BEYOND. FIRST PHASE LINKS SEATTLE TO BELLEVUE, WASHINGTON
Accession Number: 00603230
Record Type: Component
Availability: Transportation Research Board Publications Office 500 Fifth Street, NW Find a library where document is available Abstract: Phase I of the Washington State Department of Transportation's seven-mile-long Interstate 90 between Seattle and Bellevue, completed in June 1989, is an ambitious project representing one-fourth of the unfinished mileage of the transcontinental freeway from Boston to Seattle. The Interstate highway is distinguished by a number of complex elements--a tunnel bored through Mount Baker Ridge; large concrete freeway lids built to reconnect communities, absorb noise, and control air pollution; construction of the Lake Washington floating bridge; and the installation of a sophisticated operation and control system--all carried out without interrupting the daily flow of up to 80,000 vehicles. With a construction cost of $1.464 billion, the project has been selected as one of eight outstanding engineering achievements of the past year by the National Society of Professional Engineers. This article discusses the design engineering challenges of Interstate 90, including the Mount Baker Ridge tunnel, the freeway lids, the operation and control system, the Lake Washington floating bridge, and the approximately 21 miles of retaining walls along the I-90 corridor. This is followed by a discussion of the project management challenges. Included here is an explanation of the multidisciplinary team approach to the project, the design review team's accomplishments, pre-bid procedures, and contract management provisions.
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Southern Jr, W HPagination: p. 2-7
Publication Date: 1990-11
Serial: Features: Figures; Photos
TRT Terms: Identifier Terms: Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Administration and Management; Bridges and other structures; Design; Environment; Highways; Operations and Traffic Management; I20: Design and Planning of Transport Infrastructure
Files: TRIS, TRB
Created Date: Jan 31 1991 12:00AM
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