About the Project: Improves Safety and Creates a Cleaner Environment

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SR 509 traffic jam

• Creates a direct port-to-valley route for truckers and improves safety on I-5/Southcenter Hill by reducing the number of trucks climbing slowly up the grade by an estimated 15 percent.SR 509 Marine View Drive Bridge

• Reduces accidents by shifting more travel onto freeways and off arterials and local streets.

• Shortens traveling distances, reducing the amount of vehicles and congestion on regional routes.

• Over 50,000 vehicles per day will use this shorter, higher speed, and more direct route, resulting in lower emissions, cleaner air, and reduced fuel consumption.

• Previous project work has already enhanced the environment through the construction of new wetlands and contributions to water quality and habitat improvements for the Des Moines Creek basin. 

New bridge replaces culvert
at Des Moines Creek