Mats O. Halvardson

Conde B. McCullough Memorial Bridge (Coos County, Oregon)
Rehabilitation Design Engineer, 1936
Steel cantilevered through truss bridge over Coos Bay on US 101 in North Bend
Open to traffic

Prospect Bridge (Jackson County, Oregon)
Rehabilitation Design Engineer, 1930
Concrete arch bridge over North Fork Rogue River on CR 797
Open to traffic

Rock Point Bridge (Jackson County, Oregon)
Rehabilitation Design Engineer, 1919
Concrete arch bridge over Rogue River on OR 99
Open to traffic

Winchester Bridge (Douglas County, Oregon)
Rehabilitation Design Engineer, 1923
Concrete arch bridge over North Umpqua River on OR 99
Open to Traffic