Oregon Health & Science University (OHSU) desired a family-centered care facility on its crowded medical campus atop Marquam Hill. The 80-bed facility includes a pediatric intensive care unit, nursing units, surgery, radiology, laboratory, clinics, interior courtyards, two pedestrian bridges, and ancillary service.
The site – 82 feet above ground and spanning a 492-foot- wide canyon over an existing parking garage – presented many design challenges. KPFF provided structural and civil engineering design services for the resulting four-story, 250,000-sf hospital.
A steel frame structure is supported by long-span plate girders and more than 200 drilled rock anchors. This approach allows the building to connect to the main hospital, which is located 490 feet north of the only location where the children's hospital touches the ground. Pedestrian skybridges link the children's hospital to the main hospital and parking garage. Parking Garage F underwent seismic strengthening to allow the hospital to be supported on the garage. Civil services included design of a new 165-car parking facility and related site improvements, including utility infrastructure design.
The project was intensified by limited access and lack of construction staging areas. Limited truck passage meant all steel was 45-feet or shorter, requiring field splicing of girders.