(Portland, OR)  --  Bicyclists in the Portland area are demanding changes to make conditions safer for cyclists on the St. Johns Bridge.  Dozens of cyclists gathered on the bridge last night to honor 55-year-old Mitchell York, who was struck by an SUV and killed last weekend.  Police have charged 42-year-old Joel Schrantz with criminally negligent homicide in Mitchell's death.  Authorities say Schrantz was driving on bald tires and had a suspended license.