WASHINGTON, Pa. – Snowy conditions caused treacherous roadways here in Washington County Saturday. Multiple accidents have been reported in the area, including a multi-vehicle accident that closed the northbound lanes of Interstate 79 just after 9:00 a.m. Saturday morning. The accident took place in between the Canonsburg and Southpointe exits. All lanes were closed for over an hour while crews cleared the highway. The road reopened after 10:00 a.m. There is no word on the condition of the individuals involved.