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Staff: WinCo site will stress Evergreen intersections; city advancing $8.5M in improvements
Summary
City staff told the commission the WinCo TIA found three Evergreen intersections failing and described linked TSP projects (two signals and a traffic circle) currently about 30% designed and estimated at roughly $8.5 million; funding will use SDCs and additional IMA fees.
City staff presented transportation analysis that showed most study intersections will meet performance standards after mitigation, but three intersections along Evergreen are currently failing and would remain problematic when the WinCo store opens.
"Those 3 improvements, those 3 failing intersections along Evergreen ... it's gonna be approximately an $8,500,000 project," said Chris Kerr, community development director. Staff said the city and designer are about 30% through design for a package that includes a signal at Stacy Allison & Evergreen, a signal at Hays & Evergreen and a traffic circle at Harvard & Evergreen.
Kerr said the TIA was reviewed by ODOT and the city’s traffic consultant and that ODOT requested extended horizon modeling out to 2040 to capture background traffic growth. Staff described a strategy to deliver the three projects as one package to realize construction economies and to time contracts so work begins before the end of the year.
Funding and mitigation notes in the staff report included transportation SDCs and an additional Interchange Management Area (IMA) fee applied to parcels in the IMA overlay; staff estimated approximately $7.7–$7.8 million in transportation SDC allocations tied to projects in the area. The commission asked whether the TIA could credit trip reductions at nearby retailers; staff said the TIA methodology does not allow crediting reduced trips at other stores.
