Drivers are being urged to avoid Congress Street between Congress Square and City Hall between 9:30 a.m. and noon Saturday to avoid police road closures.

Depending on the size of the March for Our Lives rally, police may close down both lanes of Congress Street to vehicles. Traffic will be rerouted between 9:30 a.m. and noon before reaching Congress Street on the adjoining side streets between High and Pearl streets, according to a city advisory.

Additional side streets may have some no parking signs.