 558, back over to Dave Dildine in the traffic center. From Centerville and Chantilly toward Fair Lakes and Fair Oaks. On I-66, the eastbound backup is because of a crash just before Route 50. The left main lanes and the right express lane are blocked. On Route 50 eastbound from Centerville Road out of Chantilly toward Stringfellow Road, delays lead into the work zone, utility work, and only one left lane getting by.