Barricade
WordNet
noun
(1) A barrier (usually thrown up hastily so as to impede the advance of an enemy)
"They stormed the barricade"
(2) A barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.
verb
(3) Block off with barricades
(4) Prevent access to by barricading
"The street where the President lives is always barricaded"
(5) Render unsuitable for passage
"Block the way"
"Barricade the streets"
"Stop the busy road"