Winterburn & Lumsden

Delta Bridge (Delta County, Colorado)
Built 1924
Lost four-span through truss bridge over the Gunnison River on westbound US 50 at Delta
Replaced by modern bridge

Sapinero High Bridge (Gunnison County, Colorado)
Contractor, 1923
Steel arch bridge over Lake Fork Gunnison River on Highway
Inundated in 1963 by Blue Mesa Dam construction