The protesters lined the bridge that carries Harper Road over I-40 between Clemmons and the Yadkin River. They said they were part of a grassroots effort being publicized over the Internet to stage "Overpasses for Obama's Impeachment" protests.
There were reports of similar protests elsewhere, including one in Craven County on U.S. 70. Protesters here said they understood protests were also taking place in Charlotte, New Bern, Raleigh and Jacksonville.
Organizers here said the goal of the movement has been to create a "wave" of overpass protests that stretches across the country hour by hour.
Michelle Taylor, one of the local organizers, had no shortage of reasons when asked why Obama should be impeached.
Taylor claimed that Obama has lied about the Benghazi attack in which U.S. diplomats were killed in 2012. She cited other controversies such as the Internal Revenue Service audits of conservative groups, immigration reform, gun-rights issues and National Security Agency surveillance programs.
Although some of the protesters are members of Tea Party groups, the movement is not a Tea Party event, Taylor said.
Protesters pointed some of their signs at on-coming traffic down below on the interstate, and held others facing the road so that people could see them as they drove over the bridge.
A lot of people honked their horns on the bridge and on the interstate.
Adam Kennington of Hiddenite held a big sign that called Obama a socialist. He faulted Obama's health care plan as a redistribution scheme.
Some protesters said they plan to be on the bridge for future events. Dot Bush, one of the protesters, said other lawmakers need to be paying attention, too.
"This is not just for Obama, it is for all our representatives," she said. "They better take heed -- people are mad."