There’s still much work to be done, but Tucson International Airport’s major improvement project is already yielding benefits.

Starting Tuesday, passengers began using a new Transportation Security Administration checkpoint for Concourse B, which handles American, Alaska and Delta flights on the far west end of the ticketing level.

Construction on the airport’s Concourse A security checkpoint is scheduled to be completed in August.

The expanded and relocated checkpoints, part of a $28.3 million terminal optimization project, each have four lanes followed by a “recomposure area” overlooking the airfield.

The TSA is expected to bring in additional equipment to staff the extra lane, the airport said.

Reporter

David joined the Star in 1997, after working as a consumer and business reporter in Phoenix for more than a decade. A graduate of Ohio University, he has covered most business beats focusing on technology, defense and utilities. He has won several awards.