"Anticipated Sumner Tunnel Closure to Worsen Monday's Traffic Jam"

The closure of the Sumner Tunnel in Massachusetts for construction throughout the summer is expected to cause heavier traffic congestion starting Monday. The closure, which began on July 5 and will last until August 31, will involve work on the tunnel's ceiling, road, walls, lights, and safety and climate improvements. Officials anticipate increased traffic impacts as holiday travelers return, particularly in areas such as East Boston, north of the city, and at Logan Airport. Commuters are advised to plan ahead and allow extra time for their journeys.