New Britain Avenue was closed for more than hours between Charles Street in New Britain and Howard Street in Newington because of downed power lines.
The dump part of a dump truck brought down power lines around 6:30 a.m., bringing the wires across the road. The road reopened around 8:45 a.m.
Connecticut Light and Power was reporting 538 power outages in Newington as of 7 a.m., but power has since been restored.