Harris Bridge is a 75-foot Howe truss covered bridge spanning Marys River near Wren in Benton County, Oregon. Built in 1929, it is one of two surviving covered bridges in Benton County and stands in a pastoral setting of grass fields and riparian woodland along the upper Marys River valley west of Corvallis.
The bridge carries Harris Road across the river and remains open to one-lane vehicle traffic. Its relatively compact span and classic white-painted vertical board siding are characteristic of the county road bridges built throughout the Willamette Valley during the 1920s, when covered timber construction remained the cost-effective choice for rural crossings.
Harris Bridge was constructed in 1929 during the final productive decade of covered bridge building in Oregon. By this period, the Howe truss design had been refined through decades of regional practice, and Benton County builders applied it with confidence to bridge the Marys River at this rural crossing. The relatively modest 75-foot span reflects the narrower channel of the upper river compared to the broader crossings downstream.
The bridge takes its name from the Harris family, early settlers who farmed the land bordering the crossing. The Marys River, which rises in the Coast Range and flows through Corvallis to the Willamette, provided water for the surrounding agricultural operations that shaped the upper valley's development through the 19th and early 20th centuries.
Listed on the National Register of Historic Places in 1979, Harris Bridge is one of the earlier Oregon covered bridges to receive federal preservation recognition. Its listing helped secure resources for maintenance and structural work that have kept the bridge in service for nearly a century.