1 more time: A guide to the 2024 Sumner Tunnel closure

The Sumner Tunnel closure — round two — begins this Friday.The second, monthlong closure is only half as long as last summer's much-hyped tunnel shutdown. However, the rest of July (and a little bit of August) is still going to be "very tough-going" for Logan Airport travelers, East Boston residents and North Shore commuters, according to Massachusetts Highway Administrator Jonathan Gulliver.Here's a brief guide to the closure, how to get around it and what comes next:Remind me: which one is the Sumner Tunnel?It's the one that runs west from East Boston across the harbor, carrying Route 1A and linking up with I-93 North, Storrow Drive and downtown Boston. (The tunnel that goes toEast Boston and Logan Airport is the Callahan Tunnel, but you knew that.)When will it be closed?The closure begins at precisely 12:01 a.m. Friday — so don't stay out too late after Fourth of July fireworks Thursday night if you need to use it. The tunnel will remain closed for a full month, reopening no later t...