Office Bridge is a 180-foot Howe truss covered bridge spanning the North Fork of the Middle Fork Willamette River near Westfir in Lane County, Oregon. Built in 1944, it is the longest covered bridge in Oregon and one of the most impressive surviving examples of Howe truss construction in the state.
The bridge takes its unusual name from the former company town of Office, which served as the administrative center — the "office" — for a large timber operation in the upper Willamette drainage. It was listed on the National Register of Historic Places in 2003.
Office Bridge was constructed in 1944 to serve the logging community and homesteads in the upper Middle Fork Willamette River corridor near Westfir. The surrounding area had been heavily logged since the early 20th century, with the company town of "Office" serving as the operational headquarters for timber extraction in the region.
The bridge's 180-foot span reflects the considerable width of the North Fork Middle Fork Willamette at this crossing, making it the longest covered bridge in Oregon. It was listed on the National Register of Historic Places in 2003 as part of Oregon's statewide covered bridge nomination.