OBSTRUCT

[verb] [T] - to block (a road, passage, entrance, etc.) so that nothing can go along it, or to prevent (something) from correctly happening by putting difficulties in its wayAfter the earthquake many roads were obstructed by collapsed buildings.Her view of the stage was obstructed by a pillar.He got ten years in prison for withholding evidence and obstructing the course of justice.Conservatives have been obstructing reform for years.If you obstruct a vehicle or a person, you prevent them from moving in the direction they are trying to go.An accident is obstructing traffic on the M11.