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Episodes

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 there 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,...

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...

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...

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

Self-Propelled Modular Transporters

2/28/2017
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Big infrastructure projects often present the need to move very large objects, such as parts of chemical processing plants or even entire bridges. The capacity for moving massive components has grown to an impressive scale. In this podcast we talk with Jack Tol, Senior Sales Engineer with Mammoet, a company that provides solutions for lifting and moving large and heavy structures.

Duration:00:15:00

Bringing Down Obsolete Infrastructure by Explosive Demolition

1/25/2017
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When infrastructure becomes obsolete, unsafe, or the need for it goes away, and when the space is better used for something new, that facility must be demolished. Structures are usually disassembled piece by piece, but sometimes controlled explosion may be more efficient or necessary. This process may be no less complex than building a structure anew. In this interview we talk with Mark Loizeaux, President of Controlled Demolition, who tells us about how explosives are used to remove...

Duration:00:20:08

The importance of getting it right – errors in forecasting for large infrastructure projects

12/20/2016
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Forecasts of the costs and benefits of infrastructure projects are important for making informed investment decisions. However, there have been many instances of major cost overruns and unexpected low utilization of new facilities. To explore the nature and pattern of such prediction errors and what we can do to make more accurate predictions, we talk with, Dr. Martin Wachs, Distinguished Professor Emeritus of Urban Planning at UCLA, formerly with the RAND Corporation and before that...

Duration:00:15:11

Cable Stayed Bridges

11/22/2016
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Cable stayed bridges have become increasingly common in the past few decade, and they seem to be the design of choice for modern bridges spanning 500 to as much as 2,000 feet. In this podcast we learn of the mechanics and the advantages of this architecturally appealing design from an expert in the field, Denny Pate, Senior Vice President and Principal Bridge Engineer with Figg Engineering in Tallahassee, Florida

Duration:00:17:49