Months before a derailment and bridge collapse caused an acid spill in Kingston, Ont ... rated the incident a Class 5, meaning data was collected but investigators weren't sent to the scene.

One of the main bridges into the city of Kingston, Ontario has been closed for nearly two months. The bridge, known as the LaSalle Causeway, was damaged in late March during a construction project.

Tracy Hubbard remembers her family falling silent in the car so they could listen to the "Singing Bridge" in Kingston, Ont. — the hum of tires on the bridge's grating that formed part of the ...