DENVER (CBS4) – A traveler at Denver International Airport was struck and killed by a shuttle bus as she was walking towards the terminal on Saturday.

The accident happened outside of Terminal West. The 57-year-old woman was crossing on the fifth level in a crosswalk when she was hit and killed by a Budget Rental Car shuttle bus.

Police are investigating to see if the changes in traffic patterns contributed to the accident. The traffic patterns on both the east and west sides are different at DIA as a result of construction.

“There is no longer the elevated roadways, so we’ve had to change traffic so that now it goes in both directions,” DIA spokesperson Cyndi Karvaski said.

Pedestrians who were used to looking in only one direction now have to look both ways before crossing. Taxi and shuttle drivers admit they’re confused by the new routes.

Investigators are looking at whether the driver was at fault and if airport construction played a part. The district attorney’s office will review the case to see if anyone faces possible charges.

For now, pedestrians and drivers are urged to be more careful, more vigilant and aware that traffic patterns are far different now.

The victim’s name has not yet been released pending notification of her relatives.