Tualatin River Bridges – Stafford | Tualatin River , Oregon
$10.3 million – Competitive Bid
Clackamas County | Wildish Standard Paving Co.
The Tualatin River Bridges project replaced two bridges that were considered functionally obsolete and structurally deficient.
The Stafford project site involved replacing an existing 13-span steel and timber supported structure with a new 3-span all concrete structure, improving the roadway alignment and adding bike lanes. The new bridge is a 445-foot long by 55-foot wide structure. The substructure concrete is supported on 24-inch diameter by 100-foot long pipe pile foundation at the end bents and on 6-foot diameter and over 100-foot deep drilled shafts at the interior bents. The superstructure consists of 90-inch tall bulb-T girders spanning up to a 165 feet, and a cast-in-place concrete bridge deck. After the new bridge was open to traffic the existing concrete and steel truss bridge was removed, all working within limited in water work windows.
The Stafford project site involved replacing an existing 13-span steel and timber supported structure with a new 3-span all concrete structure, improving the roadway alignment and adding bike lanes. The new bridge is a 445-foot long by 55-foot wide structure. The substructure concrete is supported on 24-inch diameter by 100-foot long pipe pile foundation at the end bents and on 6-foot diameter and over 100-foot deep drilled shafts at the interior bents. The superstructure consists of 90-inch tall bulb-T girders spanning up to a 165 feet, and a cast-in-place concrete bridge deck. After the new bridge was open to traffic the existing concrete and steel truss bridge was removed, all working within limited in water work windows.