At approximately 12:15 am, law enforcement officers began advancing towards the bridge to remove the protesters.  During this operation to clear the protesters from the bridge, 19 protesters were arrested.  Law enforcement officers returned to the north side of the barricade at approximately 1:00 am. At approximately 1:30 am, officers again moved onto the bridge to clear protesters from the bridge and 2 protesters were arrested.During the incident, protesters had started fires on the bridge using tires and gasoline. Law enforcement used chemical agents and less lethal munitions during the incident. At least one protestor, a total of six National Guard and police officers sustained injuries.