South Park Bridge

Seattle, United States, North America

Completed · Infrastructure · Moveable Vehicular Bridge · Temperate · 2014

A community-built replacement bridge over the Duwamish River in one of Seattle's most underserved neighbourhoods, notable for its participatory design process and use of an accelerated bridge construction technique that minimised river disruption. Built after the original was demolished for safety, the project was community-financed and delivered under budget.

Innovation highlights

  • accelerated bridge construction using precast concrete deck panels
  • extensive community co-design process for an underserved neighbourhood
  • bascule lift mechanism reused from demolished bridge to reduce material waste
  • environmental mitigation including salmon habitat restoration at abutments
Client / Developer
King County / City of Seattle
Architect
HNTB
Engineer
HNTB
Type
Moveable Vehicular Bridge

#accelerated bridge construction #precast concrete #community infrastructure #social innovation #environmental remediation

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