Cotton Brothers

of Oakland, California
Gianella Bridge (Butte County, California)
Built 1911
Lost swing bridge over Sacramento River on State Route 32
Replaced by new bridge

Maybert Road Bridge (Nevada County, California)
Built 1915
Pratt Pony truss bridge over Canyon Creek on Maybert Road
Replaced by a new bridge

Purdon Crossing Bridge (Nevada County, California)
Built 1889
Pratt half through through truss bridge over South Yuba River on Purdon Road
Open to traffic

Virginia Street Bridge (Washoe County, Nevada)
Built 1905
Lost Two-span concrete arch bridge over Truckee River on Virginia Street in Reno
Replaced by a new bridge.