Project Title & Location
I-5/SR 161 I/C & SR 18 I/C (Triangle)

Project Description
The I-5/SR 161/SR 18 Interchange Improvement project (Triangle Project Phase 1) includes replacing a cloverleaf loop ramp with a flyover ramp for WB SR 18 to SB I-5 traffic and provide a new WB SR 18 connection to SR 161. The I-5/SR 18 cloverleaf interchange is defined as a High Accident Location. Eliminating one of the loop ramps will eliminate the weave on WB SR 18 and SB I-5. These improvements will improve traffic flow and safety.

Contractor/Consultant
Consultant Berger/Abam

Recent Progress
Evaluated VE recommendations and incorporated one of the recommendations.

Purchasing the right of way on key properties adajacent to S. 356th St.

Requested access hearing waivers (favorable response from some and have yet to hear back from others).

Design office submitted PCRF to move PE dollars to Right of Way.

Contacted propery owners for right of entry at possible wetland mitigation sites.

Held open house and presented final design staging to public.

Completed PS&E negotiations with consultant.

Updated project Web page.

Design Construction Impacts
Need to secure key right of way for new offramp to S. 356th Street.  We are nearing completion of one parcel with the second parcel still in negotiations; we anticipate acquiring several more properties by summer 2007.

Environmental Impacts / Compliance
Environmental impacts identified by preliminary discipline reports are minimal.  We have decided to switch the NEPA classification from an Environmental Assessment (EA) to a Documented Categorical Exclusions (DCE).  Will complete environmental documentation by May 2007.

Impacts to Traffic
The consultant will develop a staging plan to minimize traffic impacts during construction.

Planned vs. Actual Expenditures
(Total Project Cost)

Nickel funds included in above costs

2005 Transportation Partnership Account