Southwest Airlines underwent a complete development program to modernize Terminal 1 at Los Angeles International Airport (LAX). Originally constructed in 1982, the modernization will include extensive renovation, reconfiguration and refinishing of the interior. The program will include a complete interior renovation to improve security checkpoints, refresh passenger waiting areas, refurbish the baggage claim area, construct new passenger boarding bridges, renovate the terminal lobby, and seismic renovation to the current code. The estimated construction cost is $400 million. Miyamoto also provided structural engineering services to support the seismic section of the Project Definition Booklet.