Parade parking and street closures
If you want to attend the rally, organizers recommend approaching the parade from the south side. According to WTOP, no one will be allowed to cross the parade route at any point. Fencing will be up from 23rd to Sixth Street, with streets starting to close at 9:30am Tuesday morning.
You can see in the map above that there will be parking restrictions all over the parade area. Those will start at 6:30pm Monday night and run until 3:30pm on Tuesday, with some exceptions. Between that and a ton of street closures, using the Metro may be the best way to get to the parade. The Metro will operate at rush-hour frequency to help accommodate the crowds.
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