West Marginal Way SW Improvements

Project Background

Improvements and changes are coming to West Marginal Way SW this year. Since the closure of the West Seattle High Bridge in March 2020, we have seen an increase in the number and speed of motorists driving on this busy corridor. SDOT is working to prioritize safety and mobility for everyone while accommodating increased traffic.

Project area

The improvements include a temporary pedestrian signal and painted crosswalk at the Duwamish Longhouse and a new pedestrian pathway on the west side of West Marginal Way SW between the Duwamish Longhouse and SW Idaho St. Other project proposals SDOT is considering are related to Vision Zero goals of reducing motorist speeding and crashes. These may provide benefits to both people riding bikes and business access along the corridor.

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