The ND Dept. of Transportation obtained core samples from the Backwater Bridge in the morning in order to make a determination as to the extent of the repairs needed to the bridge.  Results of the testing of the samples could take up to 30 days.  The burnt and damaged vehicles were also removed from the area of the bridge during the operation which was completed at approximately noon. There was no protester activity during the operation on the bridge and no other significant events occurred during the day.