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Accessible Public Transportation Services

10/29/2018
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An important function of public transit is providing mobility for people with disabilities. This is particularly challenging because of the broad variety of needs and the complexity of providing appropriate facilities and services as a part of, or separate from, mainstream transit operations. Metro, the Washington Metropolitan Area Transit Authority, serves the Washington, DC metropolitan area with rail transit, buses, and paratransit vehicles. Metro is a leader among U.S. cities in...

Duration:00:16:55

Keeping Cars on the Road: Delaware DOT Reduces Crashes

9/25/2018
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The Delaware Department of Transportation (DelDOT) was among the winners of the 2017 Federal Highway Administration biennial National Roadway Safety Award in the category of Infrastructure and Operational Improvements. DelDOT’s winner was systematic deployment of a high-friction surface treatment that substantially reduced road departure crashes, especially in wet weather. In this podcast we learn about this surface treatment and DelDOT’s overall highway safety plan from the agency’s Chief...

Duration:00:17:51

Wind Turbines for Sustainable Energy

8/28/2018
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Wind has been an important, renewable source of energy for millennia. In recent decades wind power has come into its own, now producing more than 6 percent of U.S. electricity and growing rapidly. Today tens of thousands of wind turbines, many taller than 50-story buildings, dot rural landscapes, and soon will appear off our coasts. The design and construction of large-scale wind farms is a challenge involving energy planning, economics, and engineering. To learn about the development and...

Duration:00:19:04

Mitigating Noisy Trains

7/31/2018
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Noise is an almost unavoidable result of the operation of transportation and other infrastructure systems. Trains, planes, and automobiles produce noise that can be a warning but is mainly a source of annoyance and sometimes health risk to neighbors, riders, and employees. Measurement and management of transportation noise are complex tasks requiring an understanding of physics, technology, human perception, and economics. To introduce us to some of the problems, methods, and interventions...

Duration:00:16:43

Assuring a critical transportation resource: resilience of the inland waterways system

6/27/2018
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The U.S. inland waterways system provides a highly efficient means for moving large quantities of bulk materials – agricultural products and natural resources – which is important both for domestic industries and the export market. But the locks and dams that support the waterway network comprise an aging infrastructure with limited capacity and almost no redundancy. Planned and unexpected lock closure for maintenance and rehabilitation impose substantial costs on our economy. In this...

Duration:00:18:10

Transportation Network Companies and City Traffic

5/29/2018
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Ride matching or Transportation Network Companies (TNCs) such as Uber and Lyft have experienced extraordinary growth in major cities around the world in the past decade. What are the impacts of these services in our cities? What is known about the scale of TNC services and the demands they are placing on city streets? To tell us more about TNCs and their impacts on one city, we talk with Joe Castiglione, Deputy Director for Technology, Data and Analysis for the San Francisco County...

Duration:00:21:44

Bridge Inspection

4/24/2018
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The integrity of our infrastructure can be critical to life safety. Nowhere is this more obvious than our bridges. There are over 600,000 highway bridges in the United States, as well as a large number of transit, railroad, and pedestrian structures. Having timely and objective knowledge of the condition of these bridges is essential to assure their safety and efficiency. That knowledge comes from a program of systematic bridge inspections. To help us understand the responsibilities and...

Duration:00:21:09

Advances in Bus Rapid Transit

3/26/2018
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Urban mobility and traffic congestion present challenges to cities around the world. Many modes and service concepts are intended to meet these mobility needs. Bus rapid transit, BRT, is a competitive option because of its service quality and capacity, as well as its potential to be less costly than fixed rail transit options. To learn about the promise and delivery of BRT in the US and around the world, we talk with Samuel Zimmerman, an experienced transportation planner, a consultant to...

Duration:00:21:44

Reaching for the sky - cranes and modern infrastructure

2/26/2018
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Cranes are prominent on the skyline of every city, serving as a measure of the pace of development. They are essential tools for infrastructure construction, a source of fascination for the sidewalk superintendent, and in some cases, a source of risk. To explore the role, functioning, and safety of large cranes in construction we talk with Greg Teslia, President, Crane Safety and Inspections, of Coral Springs, Florida.

Duration:00:22:50

Critical Airport Fights Rising Sea Level

1/29/2018
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Some airports face serious flood risks because they are flat by design and are located in coastal or riverine settings. Airports in New York are particularly vulnerable because they face both rising sea level and severe storms. Richard Barone, Vice President for Transportation of the Regional Plan Association has studied these airport flood risks and discusses them in this interview.

Duration:00:14:07

Turning the Power Back on: Restoring the Grid after Massive Storms

12/21/2017
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Hurricanes and tornados can be devastating to infrastructure. The electric power grid is particularly vulnerable because it is both exposed and extensive. In 2017, Hurricanes Harvey along the Gulf Coast, Irma in Florida, and Maria in Puerto Rico demonstrated the risks of that vulnerability. To help us understand what it takes to restore power, and in the long run, to increase the resilience of the grid, we talk with Mike Vaughn, Vice President of Assets for the Entergy Corporation, producer...

Duration:00:20:38

Securing San Francisco’s Water: Rebuilding the Calaveras Dam

11/27/2017
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The infrastructure that prepares and distributes potable water to our cities requires continuing monitoring and maintenance. Many facilities are old and aging, built in an era when engineering knowledge was less and materials and methods more primitive. The San Francisco Public Utilities Commission uses a widespread collection of dams, reservoirs, aqueducts and pipe to supply 2.7 million residential and business customers, and the agency is now in the midst of a $4.6 billion renewal program...

Duration:00:11:58

High Rise Fires and the Choice of Building Materials

10/30/2017
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Fire is a rare but persistent danger in tall buildings. There have been several major high rise fires around the world in recent years, notable among them the 2017 Grenfell Tower fire in London that killed at least 80 people. That event highlights the risks that may be presented by the materials used in construction and rehabilitation. To explore the connection between building materials and fire risk, we talk with Robert E. Solomon, Division Manager for Building Fire Protection of the...

Duration:00:24:04

Betting on Green: DC Water’s Experiment with Green Stormwater Management

9/26/2017
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Managing and treating stormwater is a challenge to many cities. Building treatment plants with sufficient capacity to process large volumes of runoff that occur occasionally is not cost effective. The District of Columbia, facing a Federal consent decree to treat its stormwater, has been building subterranean storage tunnels but is now testing green treatment options that, if they work, could save much money in the long run. This experiment is funded with an unusual bonding arrangement in...

Duration:00:26:25

Digging into the past: archeology helps move infrastructure forward

9/4/2017
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Almost every infrastructure system has its foundation in the earth, and the earth can hide interesting and important secrets from the past. This creates what is perhaps a surprising role for archeology in infrastructure construction. To anticipate, identify and preserve valued subsurface finds, many infrastructure agencies engage archeologists as full-time professionals or contractors. In this interview we learn about the archeology-infrastructure connection from James Robertson, who is...

Duration:00:22:41

High Risers – Elevators and Building Design

7/28/2017
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Tall buildings mean vertical transportation, and elevators, the machines that do the heavy lifting for us, have made those buildings possible. Building height and elevator capabilities have evolved together, and new needs and concerns for sustainability are bringing about changes in elevators themselves. In this interview we talk with Thomas Leslie, who is Morrill Pickard Chilton Professor of Architecture at Iowa State University. He works on the integration of building sciences and arts,...

Duration:00:19:14

Quenching the thirst of a megacity: New York City’s Water Supply System

6/26/2017
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Clean and plentiful water is essential for life. New York City has the largest municipal water system in the United States. More than 10 million people rely on this complex of reservoirs and aqueducts, some of which are more than a century and a half old. In this podcast we learn about the structure, history, and current state of the New York City water supply system from Kevin Bone, Professor and Director of the Institute for Sustainable Design at the Irwin S. Chanin School of Architecture...

Duration:00:18:17

CREATE – Breaking the Railroad Bottleneck in Chicago

5/22/2017
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Chicago is the rail hub for the nation, served by six of seven Class I railroads that form the major interchange point for east-west rail traffic. Because of the large number of rail and road conflicts, Chicago is also the focal point for congestion and delays on the national rail network. To address this problem, in 2003 the railroads joined forces with federal, state and local governments to establish a partnership called CREATE, for the Chicago Region Environmental and Transportation...

Duration:00:20:11

Funding for Surface Transportation Infrastructure – Success in Pennsylvania

4/24/2017
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Securing the money to maintain public infrastructure continues to be a top priority in the United States. The surface transportation system, roads, bridges, and public transportation facilities, need ongoing investment to assure that they meet economic and social needs. In January, 2017, the State of Pennsylvania increased its gas tax to become the highest in the nation, working under 2013 legislation that restructured the state’s approach to transportation funding. Since then Pennsylvania...

Duration:00:15:41

ASCE's 2017 Infrastructure Report Card

3/28/2017
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The American Society of Civil Engineers (ASCE) is a strong advocate for infrastructure in the United States. Its quadrennial Infrastructure Report Card has brought us a comprehensive assessment of that infrastructure since 1992, and the picture has not been a pretty one. Reviewing 16 major types of infrastructure, the ASCE report card tells us how we’re doing and offers directions for essential improvements. In this interview we talk with Casey Dinges, Senior Managing Director of the ASCE,...

Duration:00:18:14