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Delivering a first-rate transportation system for Seattle Scott Kubly, Director







Site Index

Mercer Corridor Project Overview
Mercer West Dexter to 5th Avenue W
Project Background
- Environmental Studies
- Public and Agency Participation
- Economic Competitiveness
- Sustainability
- Livability
- Letters of Support
- Funding
- TIGER I Grant
Frequently Asked Questions
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Improving the environment

Seattles Comprehensive Plan identifies 38 urban centers areas that support increased density, including South Lake Union (SLU) one of Seattles fastest growing neighborhoods. By 2024, SLU will be the home to 36,000 jobs and housing units and is expected to be Seattles second most dense neighborhood, rivaling downtown Seattle, with 33 housing units/acre and 135 jobs/acre. The Mercer Corridor will create a transportation network scaled for an urban area, encouraging residents, employees and visitors to walk, bike or use transit (visit our livability page for more details).

Fighting global warming

SDOT estimates that, by 2024, multi-modal transportation improvements along the Mercer Corridor will result in 80,000 more trips per day walking, biking or taking the bus, rather than in an automobile. This reduces energy use by 10 million gallons of gasoline and over 85,000 tons of CO2 emissions annually.

The projects design incorporates many energy-saving and emissions-reducing technologies, like:

  • high-efficiency lighting
  • intelligent transportation systems
  • solar-powered parking pay stations

The project, which includes a landscaped median and planting strips along newly widened sidewalks, will reduce the amount of impervious surface area by 0.7 acre. It replaces water, sewer, drainage, and electrical utilities that are 80 to 115 years old. New utility systems are designed to accommodate growth, minimizing future construction impacts.

Natural drainage systems will be used to store and treat stormwater, improving the environment, increasing biodiversity, reducing pollution and runoff, and increasing urban habitat along the interface with Lake Union Park.

Green construction

Seattles commitment to sustainable practices extends beyond the design of project to its contracting and construction management efforts. Project specifications for construction encourage the salvage and reuse of onsite and offsite materials. As an example, SDOT will remove reusable building materials from eight buildings being demolished. Specifications encourage many other green construction practices, as part of Seattles Green Purchasing program.

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