Black Hawk South Dakota USA - Canadian Pacific Railway says more than a dozen of its rail cars derailed west of Rapid City near Black Hawk.
 
Spokesman Andy Cummings in Minneapolis told The Associated Press no one was injured in Thursday afternoon's mishap and there is no threat to the public.
 
Local law enforcement officials say a bridge collapsed, but Cummings says it's premature to speculate on a cause.
 
The train was on a track parallel to Sturgis Road when 13 or 14 cars derailed.
 
The Highway Patrol says the railroad is working with authorities to clear debris from Peaceful Pines Road so it can reopen.
 
Interstate 90's Exit 52 into the town is also closed.
 
Anyone entering Black Hawk must use Exit 48 or Exit 55.
 
I-90 traffic isn't impacted.

Author unknown.