ARLINGTON, Va. — Drivers heading to Reagan National Airport might soon begin to feel the impact of a major project to transform the facility.

Construction crews will begin overnight work in the lower-level roadway in the next couple of weeks, and that work will spill into daytime hours come spring.

Project spokesman Rob Yingling said, “When traffic hits peaks in the afternoon, we might have a bottleneck situation there,” which could be controlled by police officers and changes in traffic patterns.

Other changes expected in the spring include the relocation of some concourse-level ticketing kiosks for Delta and American airlines.

The changes are part of “Project Journey,” which includes the construction of new security checkpoints above the roadway.

Those will replace the current checkpoints in the B and C terminals and make much of those terminals accessible only to individuals who have gone through security. The project also includes a new terminal for passengers who currently have to take buses to get to commuter planes.

The project is expected to be completed by 2021.