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The Design of Scour-Safe Bridges
Two new highway systems, the East Papago and the Pima freeways, are currently under design and construction within the Phoenix, Arizona, metropolitan area. Both of these highways will...

Scour Measuring and Monitoring Equipment for Bridges
The National Cooperative Highway Research program (NCHRP), through the Transportation Research Board (TRB) of the National Academy of Sciences, is currently sponsoring a research effort...

Bridge Scour and Stream Instability Countermeasures
Stream instability is characterized by lateral or vertical instability. Such instability has led to the failure of bridges and loss of life. Lateral instability is caused by lateral migration...

Bridge Scour Research Needs
This paper presents a summary of the Federal Highway Administration (FHWA) priority research emphasis on bridge scour, sedimentation, and stream stability problems. The most persistent...

Hydraulic Roughness and Sediment Yield in Wheel Ruts on Forest Roads
Clear water flow and sediment yield from simulated wheel ruts in a forest road were measured at five different sites in the Northern Rocky Mountains. These measurements provided information...

Liabilities in Temporary Structures Failures?Representative Case Histories
Eight case studies involving construction accidents caused by failure of temporary structures are presented. These studies illustrate the oftentimes unintended consequence of utilizing...

FHWA'S Bridge Temporary Works Research Program
The Federal Highway Administration (FHWA) has developed a research program to address bridge falsework design and construction. This resulted from the collapse of the Route 198 bridge...

Performance of a Prestressed Rigid Frame During Removal of Column 6W from I93 in Boston, Massachusetts
The first phase of the suppression of Boston's Central Artery included the Early Viaduct Construction in the Central Artery North Area. This project required that Column 6W...

Permanent Structure as Part of the Underpinning System for Boston's Central Artery
The Central Artery, a major six lane structural steel viaduct, has been one of Boston's most significant roadways over the past three decades. Increasing congestion, accidents,...

Composite Twin Tub Bridge Erection Intersection of Interstate I-84 and I-94 in Hartford, Connecticut
Curved bridge erection requires detailed preparation by the contractor, plus a sharing of responsibility and liability between the owner, designer of the new structure and the contractor....

Construction Inspection in South Carolina
The paper will discuss the experience of the South Carolina Department of Transportation in the use of consulting engineering firms on bridge construction projects. A review of the current...

Central Artery (I-93)/Tunnel (I-90) Project
This paper is intended to provide an overview of the Boston Central Artery/Tunnel Project (CA/T) Project; a $4.9 billion USD interstate highway constructed underground through a densely...

Geotechnical and Construction Aspects of the Immersed Tube Tunnel in Boston Harbor
An immersed tube tunnel (ITT) approximately 3,850 feet in length will be constructed as a part of the Central Artery/Tunnel Interstate Highway Project located in Boston, Massachusetts....

Seismic Design Issues for Immersed Tube Tunnels
This paper provides an overview of the issues and the state of the art techniques in the seismic design of immersed tube tunnels (ITT). Particular focus is given to the ITT presently planned...

Immersed Tube Tunnel, Boston, Massachusetts
A four-lane Immersed Tube Tunnel is planned for the crossing of Boston Harbor from the City of Boston to the Logan Airport area in East Boston. The immersed tube consists of 12 sections...

Designing Plans for Constructability
The writer has obtained several years experience acting as construction engineer for roadway rehabilitation projects as a consulting engineer. In this capacity, it is necessary to provide...

Constructability?Washington State Highways
During the last decade, efforts were directed towards improving constructability of highway design at Washington State Department of Transportation (WSDOT). This paper briefly summarizes...

Time/Cost Bidding
This paper presents the details of a relatively new and innovative approach to determining the low bidder on highway construction contracts. In the cost and time method each bidder proposes...

State and Local Issues in Transportation of Hazardous Waste Materials
Towards a National Strategy
This proceedings contains papers presented at the specialty conference State and Local Issues in Transportation of Hazardous Materials: Towards a National Strategy held on May 14-16, 1990...

Problems with Rock Excavation Specification in Alberta
As a result of contract overruns and claims from classification, measurement, and payment for 'solid rock' excavation, Alberta Transportation and Utilities embarked...

 

 

 

 

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