Plan a little extra time if you’re heading south from Cobb County on I-75 any night between now and Valentine’s Day.

Because from now until then there will be at times three lanes of the interstate closed from north of Windy Hill Road to Windy Ridge Parkway, according to the Georgia Department of Transportation.

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This is all for bridgework on the Northwest Corridor Express Lanes project.

Two lanes will close from 11 p.m. to midnight and then a third lane will shut down from midnight until 5 a.m., GDOT said.

Motorists should expect delays.

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Here are the top 10 cities and the hours their commuters wasted in congestion in 2017: Los Angeles 102 Moscow 91 New York 91 Sao Paulo 86 San Francisco 79 Bogota 75 London 74 Atlanta 70 Paris 69 Miami 64