CHICAGO --There was a deadly accident under the 55th Street overpass on the Dan Ryan involving two vehicles Friday during rush hour. Illinois state police say that two people have been killed. The accident took place at 3:30 p.m. in the express lanes on the inbound Dan Ryan and all lanes but the far left were blocked at one time. Police rerouted express traffic to the local lanes. Delays built in both directions. The fire department says the two deceased were pronounced dead at the hospital. A third person was also taken to Northwestern Memorial Hospital in critical condition.