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Utility improvement project to repair utility infrastructure on West Capitol Campus


Work to replace sewer pipes on the West Capitol Campus will begin Monday, Nov. 12, and will have some impacts to parking and traffic flow. The project is scheduled to be completed by Dec. 7. The utility infrastructure on the Capitol Campus is old and in need of repair to ensure reliable service on the campus for decades to come. This project is part of a long-term plan to improve utility infrastructure campus-wide.


The work will impact visitor parking on the North and South Diagonal streets leading from Capitol Way to the Winged Victory Monument, at 12th Ave., and the Mansion parking lot, beginning on Monday.

  • Eleven visitor parking stalls on the west end of the South Diagonal will be closed Nov. 12-16
  • Ten stalls on the North Diagonal will be closed Nov. 12-Dec. 7
  • Sidewalks in the construction area of the North Diagonal will be closed Nov. 12-Dec. 7
  • Some stalls in the Mansion parking lot will be used to store project vehicles and materials through Jan. 11


Construction crews will be digging up parts of the grounds and removing concrete from Water Street and 12th Ave. in order to replace pipes, upgrade electrical wiring, widen manholes and replace their covers. A temporary road will be installed over the north lawn from Water Street in front of the Conservatory to Capitol Way for trucks to haul out soil and construction debris. Water Street will be closed from the crosswalk at the Conservatory near 11th Ave. to 12th Avenue on Nov. 19-30.

Signs indicating detour routes will be posted for pedestrians and drivers. The Dash shuttle will be temporarily rerouted during the Water Street closure.

The contractor will restore the lawns by replacing soil in areas impacted by the digging. Soil erosion control material will be placed over the exposed soil during the winter. DES Buildings and Grounds staff will seed the disturbed areas in late winter with a grass seed mix that will match the existing turf grass in color and texture.


Contact Hamed Khalili at (360) 701-2892, for more information or questions about this project.

Updates on this, and additional utility repair projects, will be sent as the work continues.

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