Replacing an active railroad bridge while limiting disruptions to both rail and river traffic presents significant challenges in design and construction staging. The 1889 Merchants Bridge at St. Louis – the oldest remaining rail bridge across the

Rebuilding the Merchants Bridge while Keeping Traffic Moving

The Infrastructure Show consists of monthly podcasts in which some of the nation’s top infrastructure experts discuss with host Professor Joseph Schofer of Northwestern University the condition of our infrastructure today, and what can be done about it. While many subjects are addressed, including repairs, upgrades and new construction, there is an emphasis on the topics of preventive and predictive maintenance, as well as “structural health monitoring” – a special focus of the Northwestern Infrastructure Technology Institute, of which Dr. Schofer is Director.

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Almost every major system we rely on seems to be vulnerable to cyberattacks from scammers, criminals, and nation states threatening our national security. Reports of cyberattacks disrupting and even destroying critical infrastructure systems are

Locking the Door on Cyberattacks

Energy from wind and solar sources is available when nature permits, but the demand for energy is based on the cyclical needs of people and their activities. To make renewable energy work, and to manage the normal daily mismatches between supply and

Delivering Energy on Demand: Grid-Scale Storage

In very cold places, like Alaska, Northern parts of Canada and Europe, building infrastructure means building on permafrost, perennially frozen ground. Permafrost provides reliable foundations for buildings and highways as long as it remains frozen.

When Permafrost isn’t Permanent – Building Infrastructure in Cold Regions

Spectacular bridges can be focal points of their host cities, reminding us that unique infrastructure can also be unique art. Lighting those bridges can carry their aesthetic value into the night. In 2013, the San Francisco-Oakland Bay Bridge was

The Bay Lights – Bridges as Art

The Port of Duluth-Superior, located at the western end of Lake Superior, is a national and international cargo hub, serving the Great Lakes and, through the St. Lawrence Seaway, the rest of the world. It supports flows of bulk cargoes such as grain,

Rebuilding the Merchants Bridge while Keeping Traffic Moving

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