Lake Shore Drive, a part of U.S. Highway 41 that runs parallel with and along the shoreline of Lake Michigan in Chicago, was closed to northbound traffic from the morning of Feb. 11 to the afternoon of Feb. 12 due to cracks in structural steel support girders on the elevated roadway leading up to the Outer Drive Bridge that crosses the Chicago River near the mouth of Lake Michigan. The popular thoroughfare handles 120,000 vehicles a day, half of which use the northbound lanes.
