SR 520 Tolling Background

SR 520 tolling is part of the Lake Washington Urban Partnership, a collaborative effort between WSDOT, King County, the Puget Sound Regional Council (PSRC), and the Federal Highway Administration (FHWA) to explore innovative ways to help manage congestion on the SR 520 corridor.

Tolls also help build a new, safer SR 520 bridge. Tolling on SR 520 is expected to raise $1.2 billion to help fund the SR 520 Bridge Replacement and HOV Program


Benefits of all-electronic tolling

  • Eliminates congestion caused by traditional toll booths - traffic keeps moving.
  • Increases safety - removes safety issues associated with traditional toll booths.
  • Decreases costs - handling cash is expensive, costing twice as much as electronic toll collection.
  • Decreases project costs - land for toll booths can be very expensive.
  • One Good To Go! account can be used across the state on all tolled bridges and roads.


Why toll the SR 520 bridge?

In May 2009, Gov. Gregoire signed ESHB 2211 (pdf 50 KB), which authorized tolling on the SR 520 bridge. Tolls on SR 520 helps pay for a new SR 520 floating bridge.

Previous tolling legislation includes House Bill 1773, which set statewide guidelines for the implementation and use of tolls on state highways, and House Bill 3096, created a Tolling Implementation Committee to work with the public to evaluate a variety of tolling scenarios.

The Tolling Implementation Committee evaluated tolling for financing the SR 520 Bridge Replacement and HOV Program, engaged citizens and regional leadership in the evaluation of tolling alternatives. The committee hosted a series of public outreach events related to tolling in the SR 520 corridor during summer 2008, and reported to the governor and Legislature in January 2009.