When the Western Pacific Railroad was constructed in 1910, Portola developed as an important railroad stop. Thanks to the railroad, Plumas County could export its lumber beyond the local area, and the timber industry became dominant in the county's economy for decades. As the railroad route extended up the Feather River Canyon, it was also used by the area's first tourists and sightseers. When the Feather River Highway was completed in 1937, through federal investment in infrastructure by President Franklin D. Roosevelt during the Great Depression, Plumas County became linked to the Sacramento Valley year-round thanks to the route's low elevation.