Transportation Lifeline Losses in Large Eastern Earthquakes
In December 1991 Applied Technology Council (ATC) and its subcontractor, EQE Inc., completed a 2-year Federal Emergency Management Agency-sponsored study to assess the seismic vulnerability...
Ports '92
This is a collection of the technical papers presented at the Ports '92 Conference held in July 1992 in Seattle, Washington. Initiated in 1977, this Conference is the sixth...
Rehabbing the Rails
In 1984, during a routine bridge inspection, a worker detected deterioration under the south abutment of a bridge that carried the main line of Philadelphia's commuter railroad....
A Face-Lift for Lincoln
The 45-year-old Lincoln Tunnel is undergoing a sweeping rehab�from its ceiling on down to its roadway. Each of the three tubes (in the world's only three-tube underwater vehicular...
HOV Lessons
As traffic congestion worsens, transportation planners are struggling to squeeze out every last bit of available roadway capacity. High-occupancy vehicle lanes are one solution, but aren't...
Restricting Rockfalls
Predicting and controlling rockfalls has always been a high priority in Colorado, where many mountainous roads pass through hazardous rockfall areas with extensive and highly variable...
Instrumenting the `Y'
Segmental bridges are still relatively new to the U.S. and questions persist about their design and behavior. To expand the knowledge base, a number of laboratory and field studies have...
The Great Chicago Flood of 1992
In April of 1992, a breach in a freight tunnel caused the river that flows through Chicago to pour into city building basements, causing the city to shut down. Critical utility systems...
Tunnel Takes Cathodic Protection
Cathodic protection is nothing new for bridges and parking garages, but it has never been installed in a tunnel�until now. As part of a $15 million rehabilitation project, the method is...
Put to the Test
In the construction industry, the concept of life-cycle cost applies not only to the infrastructure itself, but to the materials that go in to building that infrastructure. To improve...
Calendar: Bridges 1993
Featured bridges are: West Lilac Road Bridge (CA); Pine Bank Arch (NY); South Presa Street Bridge (TX); Peacock Lock (PA); Northampton Bridge (PA); Bridge of the Gods (WA); Main Street...
Special Considerations for Railroads
In comparison with highway bridges, railroad bridges are generally characterized by a larger ratio between traffic and dead load, larger braking forces, smaller relative width of the bridge...
Use of Rigid Insulation Below Grade for Roadways and Parking Areas
Minnesota Power's Herbert Service Center is located 3 miles north of downtown Duluth, Minnesota. The facility, constructed in 1967, consists of primary buildings, cold storage...
Treatment of Unstable Foundation Areas in Alaska's Pavement Management System
In the State of Alaska Department of Transportation and Public Facilities Pavement Management System (PMS) unstable foundation areas are defined as sections of roadway that experience...
Minnesota Road Research Project - An Overview
The Minnesota Department of Transportation in cooperation with the Federal Highway Administration and the Local Roads Research Board of Minnesota is constructing the Minnesota Road Research...
Multiphase Flows and the Modeling of Drifting Snow
Three categories of multiphase flow theories are commonly specialized for modeling drifting snow; the 'two-fluid' model, particle tracking schemes and kinetic...
Research Study of Highway Snowdrifting in Canada
Millions of dollars are spent annually to maintain Canadian highways in order to make them safe for motorists during the winter. In Ontario, it is estimated that on average $3,000/km of...
Snow Transport as a Function of Wind Speed and Height
When limitations are placed on mass flux in the saltation layer, a regression equation relating mass flux to wind speed and height above surface, developed by Mellor and Fellers (1986),...
New Support for Pin-Hanger Bridges
To promote safety of their bridges, many state highway departments are considering ways to add auxiliary support to existing pin-hanger bridges. The Pennsylvania DOT and its open-end consultant...
Tomorrow's Toll Road
Techniques using automatic vehicle identification (AVI) currently provide the most efficient form of electronic toll collection. Several systems have been installed in the U.S. in the...
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