The U.S. Embassy in La Paz has received multiple reports that roads from La Paz to Cochabamba and Santa Cruz will be blocked on Monday, July 31, 2017. All bus departures from La Paz to Cochabamba and to Santa Cruz have been canceled. The reason for these roadblocks has not yet been confirmed.
Even demonstrations intended to be peaceful can turn confrontational and escalate into violence. You should avoid areas of demonstrations and exercise caution if in the vicinity of any large gatherings, protests, or demonstrations.
Source: Overseas Security Advisory Council