Travelers also should watch for I-95 delays in Northern Virginia.
Metro has an extensive schedule of late-night track work. The region's road work program is picking up after the winter lull.
Metro's maintenance program will affect all five rail lines, but there's also a lot of road work across the D.C. region.
Some road construction projects are starting, and so is the District's pothole-patching campaign.
After Friday night storms, the weekend looks good for outdoor activities. But watch out for track work on all Metrorail lines.
Travelers will need to watch the weather, as well as numerous lane closings for road work and special events.
Crowds flooded Metro trains on Wednesday, and Thursday is expected to be similarly busy, officials warn.
The cherry blossoms continue to draw crowds to D.C., while four sports teams will play home games and impact traffic this week.
The cherry blossoms are nearing full bloom, drawing crowds to the Tidal Basin. Will drivers be drawn to the toll-free ride on the 495 Express Lanes?
Watch for crowding throughout the coming week on the streets near the Tidal Basin and on Metro as the cherry blossoms reach their predicted peak bloom.