San Francisco Bayshore Viaduct Seismic Retrofit
The Bayshore Freeway viaduct is located in the city of San Francisco and serves as a vital transportation link between the Bay Bridge and points south along Highway 101. This structure...

San Francisco Double-Deck Viaduct Retrofits
Following the Loma Prieta Earthquake in October 1989, six double-deck reinforced concrete viaducts in San Francisco were closed because of some isolated damage, and as a precaution for...

The Design and Construction Aspects of the Structure Research Tests at Cypress Viaduct
A research program is described whose task was to gather information about the inherent strengths and weaknesses of the existing Cypress bridge structure and to evaluate the effectiveness...

Collapse of the Cypress Street Viaduct
This paper is being presented by the Division of Structures, Post EarthQuake Investigation Team (PEQIT) on the collapse of the Cypress Street Viaduct in the City of Oakland, California,...

Chicago's Loop: A New Approach
Reconstruction of the Wells St. Viaduct cleaned up a dangerous area just north of Chicago's Loop by providing a structurally sound approach for CTW commuter trains and a column-free...

CAD Speeds Viaduct Replacement
Lack of an available detour around construction of a major viaduct spurred city officials in Reno, Nev. to build a bridge nearby to serve the purpose. Although funded separately, the permanent...

Swiss Cheese Box Girders
Now going up in the French Alps, the Sylans and Glacieres viaducts have decks supported by three-dimensional arrays of concrete trusses. The superstructures look like concrete box girders...

CADD Adds Safety to the Ryan
Computer aided design and drafting (CADD) was used to plan safety improvements for the Dan Ryan Viaduct, a two mile expressway in Chicago. Some 17 accidents per day took place along the...

Rehabilitation of a Landmark Structure: The Pershing Square Viaduct, Park Avenue, New York City

Infrastructure
Repairs and Inspection
Rehabilitation of a structure in general requires considerations of unique methods of inspection and repair. Since the structures have to remain in service while the repairs are done,...

Spanning Urban Obstacles
Extension of Pittsburgh's Crosstown Expressway is a ¾ mile portion of a massive $500 million urban highway now under construction. The extension is a complex of five roadways...

Viaduct
This concrete box girder viaduct, an Award of Merit in the 1984 Outstanding Civil Engineering Achievement competition, helps complete a seven mile gap in the Blue Ridge Parkway in North...

Specifying against Construction Noise: Westway, NYC

Denny Creek: The Toughest Bridge Washington State Ever Built
The story of how highway planners and engineers in Washington State's Department of Transportation were stopped from building a highway and viaduct through a pristine wilderness...

Denny Creek Bridge and Viaduct

Viaducts — A Case Study
Viaducts of various forms built of different materials in different ways are discussed in general, with the Chesapeake Bay Bridge and Tunnel and the Oosterschelde Bridge chosen as specific...

Kazerne Viaduct Collapse
An investigation into the failure of an off-ramp structure is described. A straight post-tensioned portal frame with drop-in spans failed during an intermediate stage of construction due...

Field Observation of Tagus River Suspension Bridge
The field observation of the Tagus River suspension Bridge was started by the LNEC Division of Observation of Structures in 1961, and has been its main activity thereafter. The aim of...

The Twelfth Street Trafficway Viaduct, Kansas City, Missouri
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The Design and Construction of Four Reinforced Concrete Viaducts at Fort Worth, Texas
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