Architectural and engineering firm

David Evans and Associates, Inc. (DEA) was selected by Multnomah County, Ore., and the Oregon Department of Transportation (ODOT) to provide the residents and recreational users innovative solutions for a gateway bridge to Sauvie Island. The Sauvie Island Bridge is a stunning 365-foot long steel tied arch main span with post-tensioned box girder approach spans. Construction of the main span was highlighted by a barge-supported trek of the fully-assembled arch down the Willamette River to its final resting spot.