WASHINGTON — The Fairfax County Board of Supervisors voted late Tuesday night to move forward with a redevelopment plan that would transform the Seven Corners area.

The decades-long project would change traffic patterns and add businesses such as shops and restaurants. It would also add thousands of new homes, leading many residents to worry about overcrowding.

“Traffic is a nightmare in Seven Corners,” said Debbie Ratliff.

“The roads are already above capacity; the schools are already over capacity,” added Christopher Buehler.

In a late-night vote, supervisors decided to move ahead with the project by 8 to 1.

Fairfax County’s Office of Community Revitalization has called Seven Corners “primarily auto-oriented” and “disconnected.”

The redevelopment project would split Seven Corners into three sections, including two village areas and a town center with the goal of creating walkable blocks that “serve motorists, pedestrians and bicyclists.”

Supporters say it will provide a much-needed change as the population grows.