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Mill Creek council OKs $621,858 design contract for Trillium Boulevard multimodal redesign
Summary
Council voted 5-1 to award a $621,858 professional services agreement to KPFF to develop 30% design plans for Trillium Boulevard, advancing a multimodal corridor project that will seek grants and further approvals before construction.
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The Mill Creek City Council on Tuesday authorized a $621,858 professional services agreement with KPFF to produce 30% design plans for the Trillium Boulevard reconstruction, a multimodal street project intended to add separated bike lanes, sidewalks and stormwater improvements.
Why it matters: Trillium Boulevard is a collector with transit and multimodal uses. The 30% design is a decision point that will allow the city to seek grant funding and firm up construction costs; the city’s long-range capital plan anticipates construction in 2027 but officials said the full project will require additional funding and may take several years to advance.
What the contract covers: Project engineer (presented by the city) told the council the scope includes preliminary roadway and multimodal design, feasibility analysis for low-impact stormwater options, right-of-way and easement research, environmental and geotechnical review, urban design and public outreach. Subconsultants will provide traffic analysis, lighting, arborist reports and public engagement. The contract breakout listed $309,000 for KPFF direct civil work and roughly $312,858 for subconsultants.
Funding and schedule: The city has budgeted about $3.8 million in its capital improvement plan through 2027 for the project, with roughly $300,000–$400,000 available in the current year and remainder scheduled in 2026; council members and staff said escalating costs meant the CIP estimate underestimated design needs. The council approved the phase-gate approach: the city will fund the 30% design to qualify for external grants, then pause before proceeding to final design and construction as funding becomes available. The city manager indicated the contract notice to proceed would be issued in September with alternatives analysis completed by January 2026 and the council asked to consider the 30% design in June 2026.
Council action: Council member Stecker moved adoption; the motion passed 5–1. Council members said they supported the complete-streets approach but noted the long timeline and the likelihood the city will need external grants to fund construction.
Ending: Staff said the 30% design will allow the city to pursue grant opportunities and refine cost estimates; the council’s vote authorizes the city manager to execute the agreement and directs staff to return with the 30% plans and funding options next year.

