The Batman and the Bridge Builder
99% Invisible23 Feb 2021

The Batman and the Bridge Builder

Mark Bloschock is an engineer from Texas, and in the late 1970s he got a job with the Texas Department of Transportation renovating the Congress Avenue Bridge. The bridge was a simple concrete arch bridge that spans Lady Bird Lake in downtown Austin. It needed to be rebuilt with more contemporary beams called “box beams.” The box beams sit below the road’s surface, and they needed to be spaced a certain distance apart. Bloschock and the other engineers decided that the gap should be somewhere between ¾ of an inch and an inch and a half, which didn’t seem like a particularly meaningful decision… until the bats moved in.

A tale of bats and bridges and how the built environment and the natural environment don’t need to be at odds with one another.

The Batman and the Bridge Builder

Plus, we talk with Simon Doble, CEO of Solar Buddy. Light access (both day and night) is a basic need many people take for granted. SolarBuddy is an Australian charity uniting a global community with a big dream to gift six million solar lights to children living in energy poverty by 2030, to help them to study after dusk and improve their education outcomes.

99% Invisible’s Impact Design coverage is supported by Autodesk. The Autodesk Foundation supports the design and creation of innovative solutions to the world’s most pressing social and environmental challenges. Learn more about these efforts on Autodesk’s Redshift, which tells stories about the future of making across architecture, engineering, infrastructure and manufacturing.

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Episoder(742)

Intro to a new Roman Mars podcast: What Trump Can Teach Us About Con Law

Intro to a new Roman Mars podcast: What Trump Can Teach Us About Con Law

Special introductory episode to a new podcast produced by Roman Mars and Elizabeth Joh. Professor Elizabeth Joh teaches Intro to Constitutional Law and most of the time this is a pretty straight forward job. But with Trump in office, everything … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

8 Jun 201711min

The Yin and Yang of Basketball (Repeat)

The Yin and Yang of Basketball (Repeat)

In 1891, a physical education teacher in Springfield, Massachusetts invented the game we would come to know as basketball. In setting the height of the baskets, he inadvertently created a design problem that would not be resolved for decades to … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

7 Jun 201719min

Squatters of the Lower East Side

Squatters of the Lower East Side

In 1987, three years after moving to New York City, Maggie Wrigley found herself on the edge of homelessness. She was trying to figure out where to stay, when she heard about an abandoned tenement building on the Lower East … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

30 Mai 201722min

New Jersey

New Jersey

The Brazilian soccer shirt is iconic. Its bright canary yellow with green trim, worn with blue shorts, is known worldwide. The uniform is joyful and bold and seems to capture something essential about Brazil. But it was not always this … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

23 Mai 201719min

This Is Chance: Anchorwoman of the Great Alaska Earthquake

This Is Chance: Anchorwoman of the Great Alaska Earthquake

This episode was recorded live as part of the Radiotopia West Coast Tour. It was the middle of the night on March 27, 1964. Earlier that evening, the second-biggest earthquake ever measured at the time had hit Anchorage, Alaska. 115 people died. Some … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

16 Mai 201727min

The Modern Necropolis

The Modern Necropolis

In the town of Colma, California, the dead outnumber the living by a thousand to one. Located just ten miles south of San Francisco, Colma is filled with rolling green hills, manicured hedges, and 17 full size cemeteries (18 if … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

9 Mai 201717min

Reversing the Grid

Reversing the Grid

For most people, electricity only flows one way (into the home), but there are exceptions — people who use solar panels, for instance. In those cases, excess electricity created by the solar cells travels back out into the grid to … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

2 Mai 201725min

Sounds Natural

Sounds Natural

In most wildlife films, the sounds you hear were not recorded while the cameras were rolling. Most filmmakers use long telephoto lenses to film animals, but there’s no sonic equivalent of a zoom lens. Good audio requires a microphone close … Continue reading → Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

18 Apr 201722min

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