FREDERICK, Md. - A developing sinkhole forced officials to close westbound Interstate 70 near South Street in Frederick and redirect traffic to the shoulder during Thursday's morning rush hour.
State Highway Administration workers noticed a slight depression Thursday as they drove along I-70 near Frederick at 7:30 a.m., said spokesman David Buck.
Recognizing it as a sign of a sinkhole, they closed down the left lane within 15 minutes and went in with jackhammers to determine the extent of the damage.
They found a sinkhole that was 10 feet deep, 12 feet wide and 12 feet long. They closed down both lanes by 8 a.m. and ran one lane of traffic through on the shoulder.