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)

The Blazer Experiment

The Blazer Experiment

In 1968, the police department in Menlo Park, California hired a new police chief. His name was Victor Cizanckas and his main goal was to reform the department, which had a strained relationship with the community at the time. Cizanckas … 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.

14 Jun 201621min

H-Day

H-Day

September 3rd, 1967, also known as H-Day, is etched in the collective memory of Sweden. That morning, millions of Swedes switched from driving on the left side of the road to driving on the right. The changeover was an unprecedented … 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 201615min

Holdout (Repeat)

Holdout (Repeat)

Around 2005, a Seattle neighborhood called Ballard started to see unprecedented growth. Condominiums and apartment buildings were sprouting up all over the community which had once been mostly single family homes and small businesses. Around this time, developers offered a … 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.

31 Mai 201616min

Loud and Clear

Loud and Clear

Sub Pop Records has signed some of the most famous and influential indie bands of the last 30 years, including Nirvana, Sleater-Kinney, The Postal Service, and Beach House. Over time, the stars and hits have changed and the formats have … 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 Mai 201618min

Separation Anxiety

Separation Anxiety

“Für Elise” is one of the world’s most widely-recognized pieces of music. The Beethoven melody has been played by pianists the world over, and its near-universal recognition has been used to attract customers for companies as big as McDonald’s  and as small as your … 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 Mai 201615min

Turf Wars of East New York

Turf Wars of East New York

Neighborhoods are constantly changing, but it tends to be the people with money and power who get to decide the shape of things to come. New York City has an especially long history with change driven by landlords and real … 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 Mai 201627min

The Grand Dame of Broad Street

The Grand Dame of Broad Street

The Bellevue-Stratford opened in 1904 and quickly became one of the most luxurious hotels of its time, rivaling the Waldorf Astoria in New York. The building was an incredible work of French Renaissance architecture. It was 19 stories high, had over a thousand … 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 Mai 201619min

Unseen City

Unseen City

Humans form cities from concrete, metal, and glass, designing structures and infrastructure primarily to serve a single bipedal species. Walking down a familiar city street, it is easy to overlook squirrels climbing in trees, weeds growing up through cracks in … 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.

27 Apr 201626min

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