Shady Bridge in Roseburg, Oregon, for Oregon Department of Transportation
GeoDesign conducted geotechnical engineering and seismic evaluation for the proposed Shady Bridge.  The project involves replacement of the northbound South Umpqua River bridge and the Interstate-5 bridge over Highway 99.  In total, the planned improvements extend over a 1.5-mile section of Interstate-5 roadway encompassing the South Umpqua River crossing, which includes a crossing of the Southern Pacific Railroad; the Oregon Highway 99 crossing; and ramps and interchange roads associated with Highway 99.  The project included characterization of a complex geological setting (anticline) relative to specifying several types of conventional and rock socket deep foundation options.