06-07-2020, 10:16 PM
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Senior Member
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Join Date: Mar 2017
Location: ABQ, New Mexico
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Videos taken from all over the San Francisco Bay region on social media show people responding to a creepy, high-pitched wailing or howling in the distance they hadn’t heard before.
It turns out the noise is made by new a new sidewalk railing installed on the bridge. When there’s high winds over the Bay, the air passing through the slats of the new rail design produces a high-pitched siren-like noise that carries very well over the water.
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