(MT. VERNON, IL) — If you traveled in and around Mount Vernon this morning, you noticed there were some traffic signals out on Route 37. MVPD reported a wide area power outage which affected the traffic signals by the police station and at the intersection of North Salem Road and Oakland. Nearly 3,200 Ameren customers in the county experienced interruption in their power services at the peak of the power outage due to a main line down.