Broadway Overpass

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As part of the third installation of Unlooping the Loop, lighting artist Derek Porter proposed weaving light, color, and varying sizes of stainless steel mesh to create a pedestrian guardrail that, at dusk, comes to life as a lively moiré! This low tech graphic animation strategy creates an endless loop of patterns and movement, all dependent on the vantage point of the viewer. The graphic display unfolds slowly as a series of stills while walking, but transforms to an active set of shifting hatches at driving speed. From the interstate below, the moiré patterns take shape as an illusion at urban scale, creating a dynamic gateway to the city from Interstate 670.
  • 2011
  • Architect, Fabricator
  • Kansas City, MO
  • 66’ x 700’ x 8’ / 350’ of railing on each side


  • City of KCMO

Eldo Team

  • Principal: David Dowell, AIA
  • Project Manager: Chris Burk


  • Bridge Contractor: Clarkson Construction
  • Fence Contractor: James H. Drew
  • Structural Engineer: Genesis Structures
  • Electrical Engineer: Lankford Fendler + Associates
  • Lighting Designer: Derek Porter Studio
  • Super-Structure Engineer of Record: GBA


  • Derek Porter


  • 2011 AIA Kansas City Allied Arts and Craftsmanship Awards - Merit Award
  • 2011 AIA Kansas City Design Excellence Awards - Merit Award
  • 2012 Chain Link Fence Manufacturers Institute (CLFMI) - Les Grube Memorial Design Award
  • 2012 KC Magazine Design Excellence Awards - Outdoor, Gold


  • The Kansas City Star, Kevin Collison, “Antidote to boring bridges,” 2011
  • The Kansas City Star, Kevin Collison, “Broadway span over I-670 to be replaced next year,” 2010

Photography by

  • Mike Sinclair


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