A portion of Maryland Avenue, between Putnam Street and Oldtown Road, will be closed today between the hours of 7 a.m. and 11 a.m., to replace a broken pole. Traffic is expected to be fully restored after the work is completed. Individuals may lose service for periods of time while the work is being performed. Also, lane shifting on Mechanic Street is scheduled for today from 7 a.m. to 3 p.m. This will affect traffic between Frederick Street and Baltimore Street. Drivers are asked to obey traffic control devices.