Police were still investigating the armed kidnapping and the killing of a security guard which ended with a police chase onto H Street on Thursday night.
All lanes have reopened, but traffic is still backed up.
Metro warned customers on Wednesday that several service changes are planned for Thursday, when a winter storm could bring several inches of snow to the area.
One person is dead and at least one injured after a car hit a tree in Dranesville.
Trains are single-tracking between Dupont Circle and Van Ness stations, with delays in both directions
The two right lanes of the Inner Loop, plus one left lane and the ramp to Route 1 are blocked due to the incident.
There are major delays following a four-vehicle crash near the Prince William Parkway, authorities said.
A medivac unit is responding to the scene of a single-vehicle crash, causing backups of about three miles in both directions.
All lanes blocked on I-95 South following crash near Route 32 in Maryland.
What you need to know to navigate the roads, rails and crowds on Wednesday.