The Maryland State Highway Administration has said that repairs to fix the sinkhole caused by a failed corrugated drainage pipe in the right lane of I-270 southbound prior to Exit 9 I-370 in Montgomery County could take weeks, according to a report by WJLA. Currently MDOT is assessing the extent of the damage and advising drivers to use MD 355 (Frederick Road) as an alternate route.
MDOT SHA is working with the Montgomery County Department of Transportation to adjust traffic signal timing on MD 355 (Frederick Road), which runs parallel to I-270. Additionally, MDOT SHA is using overhead message signs well in advance of the emergency road repair to alert driver of the situation, including both directions of I-70 in Frederick County.