that section of elevated roadway is more prone to freezing up than roads on the ground because there isn't any earth underneath to retain the heat. thus why you often see signs that say "bridge may be icy", so the roads leading up to the bridge may have just been wet, whereas you suddenly start t...
that section of elevated roadway is more prone to freezing up than roads on the ground because there isn't any earth underneath to retain the heat. thus why you often see signs that say "bridge may be icy", so the roads leading up to the bridge may have just been wet, whereas you suddenly start t...