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(741)

Longbox

Longbox

Reporter Whitney Jones argues that R.E.M.’s Out of Time is the most politically significant album in the history of the United States. Because of its packaging. 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 Jul 201416min

Snowflake

Snowflake

Well before the early 1500s, when Sir Thomas Moore first coined the term “Utopia,” people have been thinking about how to design their ideal community. Maybe it’s one that doesn’t use money, or one that drops traditional family structures 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.

15 Jul 201416min

Good Egress

Good Egress

When designing a commercial structure, there is one safety component that must be designed right into the building from the start: egress. “Egress” refers to an entire exit system from a building: stairs, corridors, and evacuation routes outside the building. Each state’s building … 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 Jul 201415min

Cold War Kids

Cold War Kids

During the 1961 Berlin Crisis—one of the various moments in the cold war in which we came frighteningly close to engaging in actual war with the Soviets—President John F. Kennedy vowed to identify spaces in “existing structures both public 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.

1 Jul 201420min

Skyjacking

Skyjacking

The term “hijacking” goes back to prohibition days, when gangsters would rob moonshine trucks saying, “Hold your hands high, Jack!” However, in the early days of commercial air travel, the idea that someone would hijack a plane was scarcely even … 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.

24 Jun 201414min

Feet of Engineering

Feet of Engineering

As a fashion object and symbol, the high heel shoe is weighted with meaning. It’s also weighted with the wearer’s entire body weight. The stiletto might be one of the only designs that is physically painful but has somehow has … 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.

17 Jun 201414min

Song Exploder

Song Exploder

99% Invisible presents Song Exploder. A song is a product of design. It’s difficult to create an original melody, but that’s only the blueprint. Every element of a piece of music could be produced any number of ways, depending on which … 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.

10 Jun 201419min

Clean Trains

Clean Trains

In just about every movie set in New York City in the 1970s and 80s there’s an establishing shot with a graffiti-covered subway. For city officials, train graffiti was a sign that they had lost control. So, starting in 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.

3 Jun 201419min

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