Track installation, which Bechtel contracted to Stacy and Witbeck, started in December 1999. To meet the project's deadline, workers placed of rail per day; tracks from Gateway Transit Center to the bridge over southbound I-205 were laid by July 2000. Hoffman Construction, the company selected by the Port to expand the airport terminal several years prior, built the $8.4 million Portland International Airport station. Local architecture firm Zimmer Gunsul Frasca (ZGF) designed the station's glass-roofed shelter to complement the airport terminal's then newly built drop-off canopy, which ZGF also designed. Bechtel began end-to-end testing of the power, trains, and signals in March 2001. TriMet took over the project that July to continue system testing and verify scheduling.