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PROJECT: Oregon Supreme Court Building update

LOCATION: 1163 State St., Salem

SIZE: 50,000 square feet

START DATE: May 2018

COMPLETION DATE: 2022 (occupancy in 2023)

COST: $55 million

OWNER: Oregon Judicial Department

GENERAL CONTRACTOR: Hoffman Construction

ARCHITECT: Hennebery Eddy Architects

ENGINEERS: Forell/Elsesser Engineers (structural), Interface Engineering (MEP), KPFF (civil)

OTHER ASSOCIATES: Knot Studio (landscape architecture), JS Perrott & Co. (wood), EC Co. (electrical), Pence/Kelly Concrete (concrete), The Harver Co. (plaster)

PROJECT SIGNIFICANCE: The 119-year-old Oregon Supreme Court Building is one of the state鈥檚 oldest continuously operating government buildings. To preserve the three-story structure and its unique features, the Oregon Judicial Department approved a seismic retrofit and modernization. The design used seismic isolation instead of conventional fixed-base seismic strengthening, which improved resilience and minimized the impact on the building.

The three-story Beaux Arts-style building features terra cotta, marble, and mahogany, with classical detailing, a grand staircase, and stained-glass laylight in the courtroom. The project team improved functionality, performance, and safety while preserving historic features. The design incorporates universal access enhancements and energy-efficiency updates that not only exceed the State Energy Efficient Design (SEED) program requirements but target a Leadership in Energy and Environmental Design gold rating. The building鈥檚 foundation was replaced with a base isolation system that will keep the building functional for immediate occupancy and operations after an earthquake.

Hennebery Eddy Architects鈥� successfully nominated the building to the National Register of Historic Places.

In an article in the Northwest Labor Press, The Harver Co.鈥檚 owner, Art Cortez, shared one of the job鈥檚 secret ingredients 鈥� horsehair taken from animals鈥� manes and tails. When mixed with plaster, the horsehair adds structural strength. To fabricate components, plasterers removed portions of existing plaster work and created molds. This involved placing each old component inside a fiberglass box and pouring urethane around it to produce a room-temperature vulcanizing (RTV) mold. Workers needed about four months to build the pieces, which are nearly identical to the originals.

鈥淏uilding Blocks鈥� spotlights noteworthy projects either under construction or approaching the start of construction. To submit a project for consideration, please visit: djcoregon.com/building-blocks.