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

Held VE workshop September 25-28, 2006.  VE team developed 6 proposals which we are evaluating at this current time.

Started purchasing property needed for S 356th ramp.

Updated program management on project ageing projections and working with CVEP consultant to update project cost estimate.

Have obtained the right-of-entry permit and are scheduled for ground water piezometers installation the second week of November.

Coordinating with WSDOT environmental to determine how project will address fish passage issues.

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 sill in negotiations; we anticipate completion of early acquisition buy 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)

Impacts to Traffic

The consultant will develop a staging plan to minimize traffic impacts during construction.  We also plan on organizing a Value Engineering (VE) study to examine ways to reduce traffic impacts during construction.

Planned vs. Actual Expenditures
(Total Project Cost)

Nickel funds included in above costs

2005 Transportation Partnership Account