Police said the victim was with his cousin and a woman. They did not try to cross the tracks and witnessed everything that occurred, authorities said.
Authorities said that Jersey Village police officers found a man lying on the ground on the Northwest Freeway before they pronounced him dead at the scene.
Police said the woman was walking across the road in an unmarked crosswalk when she was hit by a vehicle.
Police said the driver was exiting the school after dropping off their child, as the victim was on her bike riding on the sidewalk.
Police confirmed the fatality on Tuesday morning after a driver reportedly hit a pedestrian along the highway, which has since reopened.
An airport spokesperson said 12 passengers suffered minor injuries and five were taken to hospitals and some passengers described issues with the evacuation.