The Alliance for Pioneer Square


Sidewalk Prism Preservation

Sidewalk Prism Preservation

A comprehensive action plan is underway to complete an accessible guide and technical assistance for property owners in preserving the character-defining sidewalk prism panels in Pioneer Square. The guide will provide the much needed information for property owners to invest in restoring and maintaining the prisms in the sidewalks adjacent to their structures. There is an urgent need to address safety issues that exist in the deteriorated panel systems and to halt the further destruction of the remaining historic fabric. According to a 2011 Seattle University study, there are over 19,000 areaway prisms throughout the Pioneer Square Historic District. Approximately […]

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Contact Us

Alliance for Pioneer Square
310 1st Ave S, Suite 201
Seattle, WA
Phone: (206) 667-0687

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