Robert E. Grubbs
Isthmus Slough Bridge (Coos County, Oregon)2011 - East Approach Reconstruction Engineer, 1931
Bascule bridge over Isthmus Slough on Coos River Highway
Open to traffic
Tioga Bridge (Douglas County, Oregon)Lead Bridge Designer, 2013
Timber through arch bridge over North Umpqua River on North Umpqua Trail Connector
Open to pedestrians only
Winchester Bridge (Douglas County, Oregon)Rehabilitation Design Engineer - Approach Spans, 1923
Concrete arch bridge over North Umpqua River on OR 99
Open to Traffic
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