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(752)

Super Bon Bonn

Super Bon Bonn

Cities are pretty robust organisms, they tend to survive even when put under tremendous stress and strain. Local industries rise and fall, people immigrate and emigrate, but most of these changes happen over decades. What happens to a city when … 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

16 Sep 201110min

Elegy for WTC

Elegy for WTC

I want to be careful not to overstate what it means for a building to die. A building’s worth is an infinitesimal fraction of the worth a person’s life. Even two buildings don’t even move the needle in comparison 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

1 Sep 20116min

The Speed of Light for Building Pyramids

The Speed of Light for Building Pyramids

Last year, Steve Burrows CBE (Principle at the engineering consulting firm Arup) spent several weeks in Egypt studying the pyramids through the eyes of a modern day structural engineer. The result, which was presented in a documentary for the Discovery … 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

19 Aug 201110min

A Cheer for Samuel Plimsoll

A Cheer for Samuel Plimsoll

If you look at the outer hull of commercial ships, you might find a painted circle bisected with a long horizontal line. This marking is called the load line, or as I prefer, the Plimsoll line. This simple graphic design … 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

4 Aug 20117min

Design for Airports

Design for Airports

When I spoke with Allison Arieff about the design of airports, she said to me, if all airports simply played Brian Eno’s album Ambient 1: Music for Airports over the speakers, every airport would be better. I say this 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

28 Jul 20118min

Feltron Annual Report

Feltron Annual Report

Nicholas Felton is an information designer. Since 2005, he has tabulated thousands upon thousands of tiny measurements in his life and designed stunning graphs and maps and created concise infographics that detail that year’s activities. The results were originally intended … 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

14 Jul 201110min

The Blue Yarn

The Blue Yarn

In 1998 Dr. Gary Kaplan, the CEO of Virginia Mason Medical Center in Seattle received some bad news about his hospital. It was losing money. So Dr. Kaplan started studying how other hospitals were being run to see if there … 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

1 Jul 201110min

Cul de Sac

Cul de Sac

When people critique cul-de-sacs, a lot of the time, they’re actually critiquing the suburbs more generally. The cul-de-sac has become sort of like the mascot of the suburbs– like if suburbia had a flag, it would have a picture of … 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. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

17 Jun 201112min

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