Arlington Memorial Bridge. (Photo by Mr.TinDC)

Update, 9/28/18: The construction work on Arlington Memorial Bridge, which has been postponed multiple times, will occur from Friday, September 28 at 7 p.m. through Monday, October 1 at 5 a.m. The bridge will be closed to all traffic, with all six lanes and two sidewalks blocked.

Update, 9/12/18: Construction work necessitating the full closure of the Arlington Memorial Bridge has been postponed, due to the impending Hurricane Florence.

The temporary closure of all six lanes and both sidewalks is now slated to occur from 7 p.m. on Friday, September 21 through 5 a.m. on September 24.

Original: Whether you plan on driving, biking, or walking, the Arlington Memorial Bridge will be off limits for a full weekend in September.

From 7 p.m. on Friday, September 14 through 5 a.m. on Monday, September 17, all six of the bridge’s car lanes and its two sidewalks will be closed for construction activities, according to the National Park Service. The nearby Key Bridge and 14th Street Bridge will help drivers cross the Potomac, even if they’re likely to face more congestion.

And the notice isn’t just for land dwellers. The agency warns boaters in the Potomac River to “approach the bridge with caution and avoid the area near its center span.”

The octogenarian bridge that connects the Lincoln Memorial with Arlington National Cemetery and the Robert E. Lee Memorial has been deteriorating, and NPS issued warnings in March 2016 that it may need to close as soon as 2021.

Later that spring, the crossing secured a $90 million grant towards the $250 million necessary for repairs.

Per NPS, work crews will use the closure from September 14-17 to prepare the bridge for a replacement of the road deck in mid-October. During that time, three lanes and one sidewalk will be closed (or open!, depending on how you view it).

Right after the full weekend closure in September, four lanes will fully reopen, but two will be intermittently closed so that workers can install a center barrier and prepare for reversible lanes later this year.

NPS warns that over the next two and a half years, there will be a “limited number” of full bridge closures on weekends, and shorter ones at night. The next one after September is slated for November 2018.