Golden Gate Bridge

Golden Gate Bridge ‘Sings' During High Winds

The phenomenon was recorded and posted on social media, with some describing it as "angelic and peaceful," others calling it eerie, mournful or annoying.

Getty Images SAUSALITO, CA – JUNE 20: The Transamerica Pyramid building is seen through the north tower of the Golden Gate Bridge June 20, 2007 as seen from Sausalito, California. Pacific Gas and Electric has launched an estimated $1.5 million research program to study the possibility of submerging turbines under the water to gather energy from tidal flows. A previous study conducted by the Electric Power Research Institute in 2006 came to conclude that the tides that pass under the iconic Golden Gate bridge are the best on the West Coast of the U.S. to generate power. (Photo by Justin Sullivan/Getty Images)

It may not be truly singing, but the Golden Gate Bridge is starting to hum.

High winds on Friday produced tones that are the side effect of a handrail retrofit designed to make the span more aerodynamic on gusty days.

"We knew going into the handrail replacement that the Bridge would sing during exceptionally high winds from the west, as we saw yesterday,'' according to Paolo Cosulich-Schwartz, spokesman for the Golden Gate Bridge, Highway and Transportation District.

The phenomenon was recorded and posted on social media, with some describing it as "angelic and peaceful," others calling it eerie, mournful or annoying.

During design, the district studied the potential impacts of the project, including wind tunnel testing of a scale model of the bridge under high winds.

The tests revealed that under certain high wind conditions, the bridge would hum as air passed more freely over the Bridge roadway.

Video of the tests is available at https://vimeo.com/361949570/3b1e611187 and https://www.youtube.com/watch?v=PYS6Z3pbmsA .

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