Dozens of students at Portland State University joined a nationwide campus walkout to protest President-elect Donald Trump.
About 100 protesters held a peaceful rally on Wednesday and then began a march.
Portland police tweeted that impact to traffic was minor.
College students at campuses around the United States are urging administrators to protect students and employees against immigration action under the Trump administration.
Nearly daily protests have been held in Portland since Trump’s election. The Portland protests have been overshadowed by masked anarchists who have broken store windows, confronted motorists and caused other sorts of mayhem.