Engineering

The Engineering Division oversees the planning, design and construction of the city infrastructure for the Sanitary Sewer and Stormwater collection systems, the Water distribution system and the Transportation network, including streets, sidewalks and bike ways.

Plans and Reports

Explore Mercer Island’s comprehensive plans and reports – developed for the systems we manage. These plans evaluate our management of these systems, provide direction for future planning, and help us meet federal, state and regional regulations. These plans guide the development of the Capital Improvement Program (CIP) for reinvestment in the city’s infrastructure. They include the following:

Plans and Reports
Title	Attachments
2023 Capital Improvement Projects Map	2023 CIP Projects
General Sewer Plan	mercer_island_general_sewer_plan_printready_final_november2018.pdf
Water System Plan	2015 Water System Plan 2022 Limited Water System Plan Update
Transportation Improvement Program (TIP)	Map of street resurfacing history through 2022 Current PBF Improvements along the Mercer Ways Detailed description of TIP Projects 2024-2029 Map of proposed projects 2024-2029 Summary of the TIP Projects and Budgets 2024-2029
Pedestrian and Bicycle Facilities	Pedestrian and Bicycle Facilities Plan (2010) Mercer Island in Motion Map (2016) Pedestrian and bicycle facilities around the perimeter of the Island (2021)
Mercer Island Town Center Streetscape Manual	Mercer Island Town Center Streetscape Manual
Town Center Parking Plan	Town Center Parking Plan

Engineering

Plans and Reports

Contact Information

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