ALBANY— Authorities say highway exit ramps at a busy interchange near the Empire State Plaza in downtown Albany are closed after a tractor-trailer overturned, leaving the trailer handing over the edge of the road.Albany police say the truck crashed Thursday afternoon on the Interstate 787 exit ramp to the Dunn Memorial Bridge linking Albany and Rensselaer.Images on local media websites show the trailer hanging over the guardrail, with the trailer's load of trash [...]