A Henrico County resident is blamed for starting a brush fire.Preview: It looks like drivers in Arlington may have to navigate through detours around a sinkhole into the weekend. The Department of Environmental Services says the big hole that opened up on Wilson Boulevard Wednesday morning between Randolph and North Stuart streets is about 14 feet deep. Officials say this is not a quick fix and repairs may take until Sunday to complete. Lane closures in the area will favor rush-hour directions.