CN Rail Police, City Police and Fire Officials are treating last night's blaze at the James Street Swing Bridge as a crime scene. The fire was called in just after 7 o'clock last night and Charlene Squire lives on the street that runs beside the bridge and says it was an emotional evening. Meanwhile, City Fire Prevention Office Paul Abernethy says the bridge is badly damaged. An investigator from the Ontario Fire Marshal's Office is expected to arrive in Thunder Bay tonight and will start investigating the cause tomorrow.