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EYRC expands Cocopah Museum in Arizona with weathering steel and concrete

architecture-design · 2026-05-24

California-based EYRC Architects has completed a standalone extension to the Cocopah Museum and Cultural Center in Arizona, using weathering steel and pigmented cast concrete. The 1,200-square-foot gallery, separated from the original 1996 museum by a landscaped garden, features an orthogonal plan and overhanging flat roof that reference historic Cocopah dwellings. The design incorporates a woven willow lattice ceiling, a steel rebar trellis shading clerestory windows, and low-maintenance desert landscaping. EYRC and the general contractor provided services pro bono. The project involved close consultation with the Cocopah Nation to ensure cultural sensitivity.

Key facts

  • EYRC Architects designed a standalone extension to the Cocopah Museum and Cultural Center in Arizona.
  • The new building is wrapped in weathering steel and pigmented cast concrete.
  • The 1,200-square-foot gallery has an orthogonal plan and overhanging flat roof.
  • The extension is separated from the original 1996 museum by a landscaped garden.
  • EYRC and the general contractor contributed services pro bono.
  • A woven willow lattice covers the ceiling, referencing Colorado River vegetation.
  • An external trellis of steel reinforcing bars shades clerestory windows.
  • The Cocopah Nation was consulted throughout the design process.

Entities

Institutions

  • EYRC Architects
  • Cocopah Museum and Cultural Center
  • Cocopah Nation
  • Dezeen

Locations

  • Arizona
  • Yuma
  • Colorado River
  • US-Mexico border
  • California

Sources