This new underground vault will be a regional stormwater facility designed to capture and slowly release stormwater that drains to nearby creeks, reducing erosion and flooding. Over the years, as surrounding property develops in Overlake, park facilities are proposed to replace the parking on top of the stormwater vault. The development of this park would occur in the future with other neighborhood redevelopment. In the meantime, parking use will continue by the owner of the property.
Project Update: June 2013
The south vault is proposed to be operational by 2015, with construction occurring over the two summer seasons of 2013 and 2014. In 2011, the City retained Otak to design the facility in two phases. Beginning in July, Phase 1, the Utility Relocation project will move and reroute existing power and stormwater utilities that are currently located within the new stormwater vault footprint. Puget Sound Energy has already begun to work on the relocation of power services and is expected to be completed by no later than October. City Council awarded Shoreline Construction Company the Phase 1 work in the amount of $2,245,576. The project will install approximately 1,100 feet of new storm trunk line. Construction of the stormwater trunk line in NE 20th Street is expected to begin in mid-July. During this period, NE 20th Street will be closed for nighttime work. NE 20th Street will be open during the day with lane restrictions. This means that traffic levels on other arterial roads in the vicinity of the project likely will increase. In October, the City’s contractor is scheduled to begin work on the stormwater trunk line located on private property. This work will occur primarily during the day time with the possibility of some night work. All project work will be completed in November.
In Phase 2, the Overlake Village South Detention Vault project will construct a 6 million gallon stormwater vault in the east parking area of the Sears site. A new parking area will be constructed on the vault lid. The design and construction of the utility relocation within the stormwater vault area is scheduled to be completed in Spring/Summer/Fall 2014.
Project Specific Information
|June 18, 2013
||Utility Relocation project awarded to Shoreline Construction Co. by Council
|April 23, 2013
|April 17, 2013
||Overlake Village Utility Relocation Plans
|Dec 19, 2012
||Stormwater Alternatives Analysis Report
|Sept 5, 2012
||Geotechnical Engineering Report - GeoEngineers, Inc.
|Nov 4, 2011
|June 14, 2011
||Overlake Facilities Overview Map
|Mar 10, 2011
||Consultant Selection Process Information Meeting Presentation
|Feb 22, 2011
||Preliminary Geotechnical Design Services Report
|Aug 31, 2010
||Proposed Infrastructure Concept
• Overlake Village LID Retrofit Phase II
• Overlake Neighborhood Plan
• Overlake Village Stormwater / Parks Implementation Plan
• Overlake Village Street Design Guidelines
• Bellevue Redmond Overlake Transportation Study
• City of Bellevue Bel-Red Corridor Plan
• Sound Transit East Link
: Joe O’Leary
, Construction Project Manager, 425-556-2738
, Senior Stormwater Engineer, 425-556-2891
The City is planning on constructing a below-ground large stormwater detention vault next year in the Overlake Village neighborhood. The project site is located in the east parking lot of the Sears store near NE 20th Street and 148th Ave NE. The project will include restoring the parking area above the new vault lid.