A 9/11 tribute to be held today in Washington, D.C., will require several road closures and cause major traffic delays on the Dulles Toll Road and around Dulles International Airport, officials said. The road closures are to make way for a motorcycle procession.

Organizers of the event, America’s 9/11 Foundation, Inc., expect more than 1,800 motorcyclists to participate in the ride from Shanksville, PA, to the Pentagon, and up the East Coast before arriving at the site of World Trade Center in New York on Sunday.

The group will travel eastbound along the Dulles Greenway, the Dulles Toll Road, the Dulles Airport Access Highway and Interstate 66, causing major traffic delays — especially for commuters on the eastbound Dulles Toll Road and all motorists leaving Dulles Airport, according to a Fox 5 News report.

Police departments from all the jurisdictions affected will escort the motorcycle procession and the Metropolitan Washington Airports Authority Police will provide escort from the Dulles Greenway to Interstate 66.

The ride will continue on Saturday and Sunday up Interstate 95, arriving at Ground Zero on Sunday.

The organization’s website has posted potential traffic delays and expected times of those delays for the weekend. The procession is expected to follow this route (All times are approximate):

Today
8:45a.m.: I-68 East from Cumberland to I-70 East to Exit 28, Hagerstown MD (Prime Outlets)
Depart 12:30 p.m.: I-70 East to exit 52a US-15/340 South US-15 South (business route) into (2:00pm ish) Leesburg to Dulles Greenway East to Rt 66 Rt 66 to Rt 110 to Pentagon

Saturday
Depart Pentagon at 6:45 a.m. 395 North to BW-PKWY
BW-PKWY to I-95 to Maryland House Rest Area
Depart Maryland House 9:30 a.m. I-95 north to Delaware
Depart from Mike’s Famous HD 1:15 p.m. I-95 North to 295 North in NJ
295 North to Exit 57 Bordentown (Rt 130) expect arrival 2:45 p.m.
Rt 130 to US 1/9 to Linden NJ
Depart Linden 6:30 p.m. US-1/9 to Holland Tunnel

Sunday
9 a.m. 50th and 7th Ave to World Trade Center after 11 a.m.
All roadways will have a large Motorcycle presence