Around 9:10 this morning, The Bridgeport ECC received calls for a structure fire in the area of Main st and Ochsner Place on the Bridgeport/Trumbull line. This Otto-3 assignment consisted of Engine 16, Engine 1, Engine 12, Engine 15 as RIT, Ladder 5, Ladder 10, Rescue 5, Safety 1 and both Battalions. Engine 16 arrived on scene and reported heavy smoke pushing from the 3rd floor. Battalion 1 soon transmitted a 2nd Alarm, the 2nd Alarm assignment consisted of Engine 4, Engine 10, and Ladder 11. Companies worked for an hour and a half to battle heavy fire throughout the 3rd floor and attic areas of the 2 1/2 story wood frame dwelling. The fire was placed under control at 10:33am. The Fire Marshal's office is investigating the cause of the fire.