George Barr, 75, appeared at a hearing on Wednesday, where the charges against him were downgraded to third degree murder.
It's unclear what caused the driver to ignore the large road closure signs and fencing.
Officers say the workers spotted structural support columns beginning to buckle on the 21st floor and self-evacuated.
Police said a 24-year-old man was standing in the bike lane, placing traffic cones for an active construction zone, when he was hit by a vehicle.
President Trump's White House ballroom plans are in the hands of three appellate judges who will hear arguments over whether construction should be allowed to continue.
The organization teamed up with Firsttrust Bank to begin gutting a home in Strawberry Mansion.