From an email by the Penn Quarter Neighborhood Association:
The DC Department of Transportation distributed information from the Metropolitan Police Department (MPD) about the road closures for the March for Life Rally on Monday, January 23.
Only street closures in or near Penn Quarter follow.
11:30am – 12:30pm
The following streets will be closed so that participants at the Verizon Center Prayer Session can join the March for Life Rally on the National Mall
Cross streets will also be temporarily closed
F Street, NW beginning at 7th Street and ending at 12th Street
12th Street, NW beginning at F Street and ending at Constitution Avenue, NW
The march heads toward the Supreme Court then circles back to Pennsylvania Avenue at 6th Street, NW
Cross streets will be temporarily closed
Constitution Avenue, NW from 3rd Street to 9th Street, NW
Constitution Avenue from 3rd Street to First Street, NE
3rd Street, NW from C Street to Constitution Avenue, NW
6th Street and Pennsylvania Avenue, NW
This is precisely what I received; I have no idea if any portion of 6th Street north of Pennsylvania Avenue will be closed
Eastbound traffic on Pennsylvania and Constitution avenues will be diverted at 7th Street, NW