A motorcycle accident Tuesday night in Grundy County sent two Trenton residents to the hospital.   According to the Highway Patrol, Jesse Bruce, 19, was eastbound on a private road, about two miles south of Galt, when he failed to negotiate a turn.  He went off the roadway and overturned. Bruce and his passenger, Ericka Spurgin, 15, were ejected. Both were taken to Wright Memorial Hospital with serious injuries.