Samuel Lancaster

Crown Point Viaduct (Multnomah County, Oregon)
Highway Engineer, 1914
Bridge over Crown Point on Historical Columbia River Highway
Open to traffic

Eagle Creek Viaduct (Multnomah County, Oregon)
Lead Engineer, 1915
Concrete deck girder bridge over Tooth Rock slopes on Historical Columbia River Highway
Open to pedestrians

Moffett Creek Bridge (Multnomah County, Oregon)
Built 1915
Closed-spandrel arch bridge over Moffett Creek on Historic Columbia River Highway (Abandoned)
Open to pedestrians

Oneonta Tunnel (Multnomah County, Oregon)
Lead Engineer, 1914
Tunnel under Oneonta Basalt Out-Cropping on Historical Columbia River Highway
Re-Opened to pedestrians in 2009; damaged by fire Sept. 2017

Tooth Rock Viaduct (Multnomah County, Oregon)
Lead Engineer, 1915
Concrete deck girder bridge over Tooth Rock slopes on Historical Columbia River Highway
Open to pedestrians