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East Plaza Water Infiltration Repair

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For more information, call or email:

(360) 407-9343

About the Project

Aerial photo of area where the project is taking place.

This project will:

  • Stop water from leaking into the Plaza Garage
  • Redesign a portion of the East Plaza to better complement the intended landscape design of the East Capitol Campus

The project will continue through December 2019. Public access to the East Plaza will be limited.

This is the current phase (phase B) of a multi-phased plan developed in 2006 to implement a master plan approved by the State Capitol Committee in 1997.

Project Updates

Aug. 20, 2019

Gravel deliveryWhile construction crews finish up waterproofing the roof of the Plaza Garage, trucks are delivering landscaping soil and drainage gravel to the construction site. This activity is increasing traffic and noise related to the construction. Later in the month, the trucks delivering landscape materials will be replaced by cement trucks that will be pouring concrete for the walkways of the new design.

Flaggers are on site to direct traffic at the Maple Park entrance to the Plaza Garage. Parkers who use the Maple Park entrance can access alternative entrances to avoid Gravel distributiondelays. Visitors can park at the Jefferson and Maple Park Visitor Lot.

Installation of drains continues and will temporarily close parking stalls on the A and part of the B levels of the Plaza Garage. Closed stalls are clearly marked with orange cones and yellow caution tape.

For more information on the East Plaza Water Infiltration Repair project, email eastplaza@des.wa.gov or call (360) 407-9343.

Photos courtesy of ESD Employee Carole Mathews (top left) and WA Patriot Construction.

Aerial view of construction site

East Plaza Tenants


  • For Capitol Campus visitors. Visitor parking costs $2 per hour weekdays from 7 a.m.-5 p.m., but is free in the evenings and on weekends.
  • The Capitol Way & Maple Park Annex Visitor parking lot will be closed -- except for two ADA parking stalls -- during construction. Nearby visitor parking can be found at the Visitor Information Center at 15th Ave. SW and Columbia St., Maple Park and Jefferson St. S.E., the A level of the Plaza Garage at the Maple Park entrance and the North and South Diagonals on the West Capitol Campus.
  • For East Capitol Campus tenants: The construction will have a minimal impact on employee parking in the Plaza Garage. Updates will be sent to registered parkers as new information becomes available.