The Batman and the Bridge Builder
99% Invisible23 Helmi 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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The Capitol Columns

The Capitol Columns

If you were present for any of the presidential inaugurations, from Andrew Jackson to Dwight D. Eisenhower, you saw the solemn oath of office taken between twenty-two smooth, sandstone columns at the East Portico of the U.S. Capitol Building. The … 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.

6 Touko 20116min

You Are Listening To + Radio Net

You Are Listening To + Radio Net

youarelistening.to appeared online on March 6, 2011 and I was hooked instantly. The combination of the police scanner and ambient music is an intriguing, and distinctly live, experience (unlike most of the time shifted audio I tend to consume). Its … 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.

22 Huhti 201120min

Free Speech Monument

Free Speech Monument

In 1989, a group called the Berkeley Art Project decided to hold a national public art competition to create a monument that would commemorate the 25th anniversary of the Free Speech Movement, which began on the University of California Berkeley … 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.

15 Huhti 20118min

BLDGBLOG: On Sound

BLDGBLOG: On Sound

Most sound design in architecture is centered around designing for silence. Buildings are trying to block out that constant stream noise from the street and insulate you from those jarring clangs of industry. Geoff Manaugh loves the intersection of sound … 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.

1 Huhti 20115min

Nikko Concrete Commando

Nikko Concrete Commando

In 2001, Delfin Vigil was walking the streets of San Francisco and ran across the name “Nikko” carved into the concrete sidewalk. After seeing Nikko once, Delfin began to see the name everywhere. One block after another, there he was … 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.

25 Maalis 20117min

RJDJ Reactive Music

RJDJ Reactive Music

This week, the radio audience heard episode #10, but for you web and podcast listeners, I have a story I did about a year and a half ago, about the reactive music app called RJDJ. I did this piece for … 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.

21 Maalis 20119min

Liberation Squares plus NY Dick

Liberation Squares plus NY Dick

In a recent piece from Urban Omnibus, Vishaan Chakrabarti (Professor at the Graduate School for Architecture, Planning and Preservation at Columbia University), wrote about how urban open spaces contribute to political change, “Public spaces like Tompkins Square, Tiananmen Square and … 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.

11 Maalis 201111min

Check Cashing Stores

Check Cashing Stores

A few years ago, journalist Douglas McGray learned that the largest chain of check cashing stores in Southern California, Nix Check Cashing, was being bought by the nation’s largest credit union, Kinecta. The credit union thought it had something 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.

4 Maalis 20115min

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