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Project Title & Location
SR 704 - Cross-Base Highway, Spanaway
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Project Description
When completed this project will provide a direct east-west highway connecting I-5 and SR 7. The Cross-Base Highway will be a new six mile, four lane limited access highway with four signalized intersections and two new interchanges.
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Contractor/Consultant
HDR, Inc. has been selected to perform the PS & E for Project #1. (Spanaway Loop Rd. to SR 7)
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Recent Progress
The 60% review of PS&E plans for Project #1 (Spanaway Loop Road to SR 7) was completed in March 2007. Permits for Project #1 are ongoing. Plans for Approval (PFA) for Project #1 was approved October 31, 2006. Design Approval for the entire corridor was approved on February 2007. Right of Way acquisition for Project #1 is underway. Project #1 Hydraulics Report submitted for approval on May 14, 2007. SEPA adoption Notice posted May 1, 2007. Constructability review for I-5 / SR 704 Single Point Urban Interchange (SPUI) is underway. Public open house was held on May 23, 2007 at Camas Prairie Elementary School, Spanaway.
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Design Construction Impacts
This project will construct a new highway connecting I-5 and SR 7. To accommodate the I-5 connection, the project will construct a new Thorne Lane interchange. A new southbound connector roadway will link Gravelly Lake Drive to Thorne Lane to minimize interstate traffic congestion. The Thorne Lane interchange reconstruction will be accomplished south of the existing interchange allowing motorists to use the existing facility during construction of the new Thorne Lane bridge over the interstate.
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Environmental Impacts / Compliance
During the EIS phase, the selected alternative was chosen because it avoids many sensitive areas. In locations where impacts are unavoidable, design will minimize impacts to the environment by use of retaining walls, bridges and steeper side slopes.
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Impacts to Traffic
Project designs will incorporate sound traffic management practices to minimize impacts to motorists. Traffic impact at the existing Thorne Lane/I-5 interchange will be inevitable during construction of the new Thorne Lane I/C. Minimal disruption of I-5 traffic is anticipated.
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Milestones |
Scheduled |
Attained |
Milestone Outlook |
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Begin Preliminary Engineering
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September 11, 2003
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Record of decision was attained in August 2004. Design approval was attained in February of 2007
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Environmental Documentation Complete
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August 2, 2004
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Right of Way Certification
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June 16, 2008
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October 2006
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This milestone has been accomplished.
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Project #1 Advertisement
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June 16, 2008
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Current design effort for Project #1 is ahead of schedule. Expected advertisement date for Project #1 is January 2008.
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Estimate Open to Traffic (Project #1)
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December 31, 2009
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The construction of project #1 is expected to complete in December 2008.
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