The date is set for the closure of the bridge for the major rehabilitation to start. On Saturday, January 15 at 6 a.m., the bridge will close to all traffic including pedestrians and bicyclists for up to 24 months. Detour Route for Motorists Signs are being placed on Interstate 205 and other area roads directing motorists to use the I-205 Abernethy Bridge to cross the Willamette River between West Linn and Oregon City. It is less than 1 mile from the Arch Bridge. Access to all businesses in downtown Oregon City will be open throughout the project.