![](https://metropolismag.com/wp-content/uploads/2024/08/01_PDX-Airport-Main-Terminal_Ema-Peter-Photography-scaled.jpg)
Forest to Frame: Why Portland’s Airport is a New Milestone for Mass Timber
The answer was what’s become America’s largest mass-timber airport: to prefabricate at the edge of PDX’s grounds. The structure is a nine-acre wood roof, doubling the existing terminal’s square footage. After slowly sliding the roof into place on hydraulic …