<p>Police are investigating a suspicious fire that destroyed a Canadian National Railway trestle bridge outside the town of Mayerthorpe in Alberta, Canada, on Tuesday afternoon, April 26, according to media reports</a>. Three dozen firefighters battled the blaze on the ground while helicopters and planes bombed the bridge with water from above.</p><p>The bridge fire was one of 17 fires that have broken out in the area in the past week, and all are under investigation, according to reports. Credit: YouTube/Nathanyal Warnock</p>
